--- title: Announcing the Platåberget Testnet | daily.dev description: Ethereum's Glamsterdam upgrade (Gloas + Amsterdam) is being tested on a new public testnet called Platåberget, scheduled to fork on August 20th. The upgrade... canonical: https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Announcing the Platåberget Testnet | daily.dev og:description: Ethereum's Glamsterdam upgrade (Gloas + Amsterdam) is being tested on a new public testnet called Platåberget, scheduled to fork on August 20th. The upgrade... og:url: https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff og:image: https://api.daily.dev/og/posts/59q8QE6FF.png og:image:alt: Announcing the Platåberget Testnet og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Announcing the Platåberget Testnet **[Ethereum](https://daily.dev/sources/ethereum)** · 4 min read · 1 upvotes · 0 comments ## Summary Ethereum's Glamsterdam upgrade (Gloas + Amsterdam) is being tested on a new public testnet called Platåberget, scheduled to fork on August 20th. The upgrade introduces enshrined Proposer-Builder Separation, block-level access lists, gas repricings targeting a ~200M gas floor, and larger contract/initcode size limits (24KiB to 64KiB, 48KiB to 128KiB). Critically, gas repricing breaks the assumption that plain ETH transfers always cost a flat 21,000 gas: sending to a new account now incurs additional state gas via a new state gas dimension (EIP-8037, EIP-2780, EIP-8038). Any wallet, indexer, or gas estimator that hardcodes a maximum gas limit or assumes a single gas dimension will break and needs updating. Developers are urged to test against Platåberget before the fork reaches Sepolia, Hoodi, and eventually mainnet. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Will the Glamsterdam upgrade break gas estimation tools that assume a flat 21,000 gas cost for ETH transfers? Yes, sending funds to an account that does not yet exist will incur additional state gas beyond the base 21,000, because EIP-8037 introduces a separate state gas dimension metered at a fixed cost per state byte (CPSB) for operations that create new state. Transfers to existing accounts still cost the familiar 21,000 gas, but transfers to new accounts add STATE_BYTES_PER_NEW_ACCOUNT × CPSB at runtime. _Track protocol-level gas changes like this on daily.dev before they break production wallet or estimator code._ ### What is the maximum contract size after the Ethereum Glamsterdam upgrade? Deployed contract size increases from 24KiB to 64KiB, and maximum initcode size increases from 48KiB to 128KiB. These limits are part of the Glamsterdam fork, first tested on the Platåberget testnet ahead of rollout to Sepolia, Hoodi, and eventually Ethereum mainnet. _Developers planning around contract size limits can follow Ethereum upgrade details on daily.dev._ ### When does the Glamsterdam fork activate on the Platåberget testnet? The Glamsterdam fork activates on the Platåberget testnet on August 20th, giving stakers, dApp developers, and infrastructure operators time to make validator and builder deposits and prepare their systems before the transition. Platåberget runs for months as a stable testing ground, unlike prior short-lived devnets, before Glamsterdam proceeds to Sepolia and Hoodi. _Anyone timing an Ethereum upgrade migration can track fork schedules like this on daily.dev._ ## Similar posts on daily.dev - [Glamsterdam Testnet Announcement](https://daily.dev/posts/glamsterdam-testnet-announcement-mqsneqgjf) · Ethereum · 0 upvotes · 0 comments - [Glamsterdam Repricing Impact for Smart Contract Developers](https://daily.dev/posts/glamsterdam-repricing-impact-for-smart-contract-developers-yywzq2lwq) · Ethereum · 0 upvotes · 0 comments - [Checkpoint \#9: Apr 2026](https://daily.dev/posts/checkpoint-9-apr-2026-laorcirqw) · Ethereum · 0 upvotes · 0 comments - [Checkpoint \#8: Jan 2026](https://daily.dev/posts/checkpoint-8-jan-2026-yclgpgex0) · Ethereum · 1 upvotes · 0 comments - [Protocol Cluster Updates: May 2026](https://daily.dev/posts/protocol-cluster-updates-may-2026-a9md3yty7) · Ethereum · 0 upvotes · 0 comments --- Tags: [#blockchain](https://daily.dev/tags/blockchain), [#ethereum](https://daily.dev/tags/ethereum), [#smart-contracts](https://daily.dev/tags/smart-contracts) [View this post on daily.dev](https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Announcing the Platåberget Testnet","url":"https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff"},"datePublished":"2026-08-17T08:17:55.345Z","dateModified":"2026-09-14T07:54:50.125Z","description":"Ethereum's Glamsterdam upgrade (Gloas + Amsterdam) is being tested on a new public testnet called Platåberget, scheduled to fork on August 20th. The upgrade...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2b5250c09018d16278ee91097aaa4059?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2b5250c09018d16278ee91097aaa4059?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Ethereum","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Ethereum","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/881328ee52904833bc407acdbad603ee","url":"https://daily.dev/sources/ethereum"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"blockchain,ethereum,smart-contracts","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Ethereum","item":"https://daily.dev/sources/ethereum"},{"@type":"ListItem","position":3,"name":"Announcing the Platåberget Testnet"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/announcing-the-plat-berget-testnet-59q8qe6ff#faq","mainEntity":[{"@type":"Question","name":"Will the Glamsterdam upgrade break gas estimation tools that assume a flat 21,000 gas cost for ETH transfers?","acceptedAnswer":{"@type":"Answer","text":"Yes, sending funds to an account that does not yet exist will incur additional state gas beyond the base 21,000, because EIP-8037 introduces a separate state gas dimension metered at a fixed cost per state byte (CPSB) for operations that create new state. Transfers to existing accounts still cost the familiar 21,000 gas, but transfers to new accounts add STATE_BYTES_PER_NEW_ACCOUNT × CPSB at runtime. Track protocol-level gas changes like this on daily.dev before they break production wallet or estimator code."}},{"@type":"Question","name":"What is the maximum contract size after the Ethereum Glamsterdam upgrade?","acceptedAnswer":{"@type":"Answer","text":"Deployed contract size increases from 24KiB to 64KiB, and maximum initcode size increases from 48KiB to 128KiB. These limits are part of the Glamsterdam fork, first tested on the Platåberget testnet ahead of rollout to Sepolia, Hoodi, and eventually Ethereum mainnet. Developers planning around contract size limits can follow Ethereum upgrade details on daily.dev."}},{"@type":"Question","name":"When does the Glamsterdam fork activate on the Platåberget testnet?","acceptedAnswer":{"@type":"Answer","text":"The Glamsterdam fork activates on the Platåberget testnet on August 20th, giving stakers, dApp developers, and infrastructure operators time to make validator and builder deposits and prepare their systems before the transition. Platåberget runs for months as a stable testing ground, unlike prior short-lived devnets, before Glamsterdam proceeds to Sepolia and Hoodi. Anyone timing an Ethereum upgrade migration can track fork schedules like this on daily.dev."}}]} ```