# \[CONSTITUTIONAL\] 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\
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**Author:** ![EzR3aL](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.arbitrum.foundation/ezr3al/32/14760_2.png) [@EzR3aL](https://forum.arbitrum.foundation/u/EzR3aL)\
**Post date:** [February 13, 2025, 6:58pm UTC](https://forum.arbitrum.foundation/t/constitutional-aip-arbos-version-40-callisto/28436/2 "2025-02-13T18:58:08Z")

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I may not be able to talk tech-wise here a lot, but I am in favour. Arbitrum is showing that its really trying hard and pushing the chain with updates and features, like recently with BoLD.  
I am curious to see comments from other delegates.

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