# Runtime release notification for v2.0.0 \[29.10.2025\]

**URL:** <https://forum.polkadot.network/t/runtime-release-notification-for-v2-0-0-29-10-2025/15692>\
**Category:** Tech Talk\
**Tags:** runtime-releases\
**Created:** [October 29, 2025, 8:20am UTC](https://forum.polkadot.network/t/runtime-release-notification-for-v2-0-0-29-10-2025/15692 "2025-10-29T08:20:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anaelleltd](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.polkadot.network/anaelleltd/32/7664_2.png) [@anaelleltd](https://forum.polkadot.network/u/anaelleltd)\
**Post date:** [October 29, 2025, 8:20am UTC](https://forum.polkadot.network/t/runtime-release-notification-for-v2-0-0-29-10-2025/15692/1 "2025-10-29T08:20:45Z")

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**Runtime release notification**

Hello,

This is to advise you that the Polkadot community is currently voting to upgrade the [_Polkadot system_](https://polkadot.subsquare.io/referenda/1777) to the [v2.0.0 release](https://github.com/polkadot-fellows/runtimes/releases/tag/v2.0.0).

This is a major runtime upgrade that enables and schedules the [Polkadot Asset Hub Migration](https://github.com/polkadot-fellows/runtimes/pull/984) for block [28490502](https://polkadot.subscan.io/block/28490502), which is around Tuesday 4th November 2025 8 AM UTC.

A complete list of important resources and guides for users, builders, and validators can be found in the [Asset Hub Migration FAQ](https://docs.google.com/document/d/1XR3vL2p4QV0wC7FrlC8eN-q62BqNFTFElbj21wEmMGg/edit?tab=t.0#heading=h.vxykbd6ai7n7).

🚧 **Important note for Polkadot Relay validators and Asset Hub collators:** 🚧  
During testing for the Polkadot Asset Hub Migration, we have identified that Polkadot Relay chain validator nodes might experience [occasional slowdowns](https://x.com/OliverTaleYazdi/status/1983277034991407349) in the absence of a dedicated “–-db-cache” CLI flag.

To prevent any potential network slowdowns, we request that all Polkadot Relay chain validators update their nodes to contain an extra “–-db-cache 8000” CLI flag. They should keep this flag in place until a follow-up communication confirms that it is no longer needed.

**Additional note for Ecosystem builders:**  
This upgrade brings to a close a series of critical network optimisations (aka “Polkadot 2.0”) spanning Asynchronous backing, Agile Coretime, and Elastic scaling.  
It also introduces all the pre-requisites for the launch of Smart contracts functionalities (aka “Polkadot Hub”), as part of the [Polkadot Upgrade 2025](https://www.parity.io/blog/polkadot-upgrade-2025-what-you-need-to-know).

The projected enactment date for this runtime upgrade is 3rd November 2025.

Many thanks.