# \[CONSTITUTIONAL\] AIP: ArbOS Version 40 Callisto

**URL:** <https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-40-callisto/28436>\
**Category:** Finalized AIPs\
**Created:** [February 13, 2025, 1:55pm UTC](https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-40-callisto/28436 "2025-02-13T13:55:57Z")\
**Posts on this page:** 1\
**Showing post:** 38

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**Author:** ![WinVerse](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.arbitrum.foundation/winverse/32/10523_2.png) [@WinVerse](https://forum.arbitrum.foundation/u/WinVerse)\
**Post date:** [March 3, 2025, 1:49pm UTC](https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-40-callisto/28436/38 "2025-03-03T13:49:22Z")

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DAOplomats voted FOR this proposal on Snapshot.

This AIP brings essential Ethereum Pectra changes while maintaining Arbitrum’s unique optimizations. Plus, EIP-7702 is a game-changer for EOAs, enabling account abstraction natively so we were happy to support this update.

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