# 28 May 2025 - Roundup of Active/Upcoming Votes

**URL:** <https://forum.arbitrum.foundation/t/28-may-2025-roundup-of-active-upcoming-votes/29322>\
**Category:** Weekly Voting Reminders & Updates\
**Created:** [May 28, 2025, 8:01am UTC](https://forum.arbitrum.foundation/t/28-may-2025-roundup-of-active-upcoming-votes/29322 "2025-05-28T08:01:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![raam](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.arbitrum.foundation/raam/32/9309_2.png) [@raam](https://forum.arbitrum.foundation/u/raam)\
**Post date:** [May 28, 2025, 8:01am UTC](https://forum.arbitrum.foundation/t/28-may-2025-roundup-of-active-upcoming-votes/29322/1 "2025-05-28T08:01:43Z")

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## Ongoing Onchain Proposals 🗳

### 1. [[CONSTITUTIONAL] AIP: ArbOS Version 40 Callisto](https://www.tally.xyz/gov/arbitrum/proposal/13108804573775967668959825241666341617107666532012387058509418598838035461528?govId=eip155:42161:0xf07DeD9dC292157749B6Fd268E37DF6EA38395B9) (Voting ends May 29)

This AIP proposes to upgrade Arbitrum One and Arbitrum Nova to **ArbOS 40 “Callisto.”**

🔹 Callisto adds support for relevant Ethereum Execution Layer (EL) changes from Ethereum’s recent **Pectra** network upgrade and includes a minor fix related to Arbitrum Stylus.  
🔹 Among the EL changes introduced are a way for Externally Owned Accounts (EOAs) to execute smart contract code directly from their own addresses (via [EIP-7702](https://eips.ethereum.org/EIPS/eip-7702)) and new precompiles to efficiently perform operations over the BLS12-381 elliptic curve, including BLS signature verification (via [EIP-2537](https://eips.ethereum.org/EIPS/eip-2537)).

## Ongoing Temperature Checks ⚡

### 1. [[Constitutional] AIP: Constitutional Quorum Threshold Reduction](https://snapshot.box/#/s:arbitrumfoundation.eth/proposal/0x2d4089d72617eb137d6ee7ab9ae9efbe3cd1e0fcff48df24b926ce6259b734d3) (Voting ends May 29)

This AIP proposes to reduce the constitutional quorum threshold from 5% to 4.5% of votable $ARB supply.

🔹 This is to ensure that well-supported proposals can successfully conclude by aligning quorum requirements with current levels of voter participation, reducing the risk of legitimate initiatives failing due to quorum thresholds not being met.  
🔹 This proposed 0.5% reduction would be a short-term adjustment that enables critical governance to move forward while longer-term reforms are considered and developed.

## Other Reminders ⏰

### 1. [March 2025 Security Council Elections - Complete](https://forum.arbitrum.foundation/t/march-2025-security-council-elections-complete/29314/2)

🔹 The Security Council Election process for the March 2025 cohort is finally complete, as election results have taken effect across relevant chains.  
🔹 Please welcome the newly elected members: [fred](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0xD8D4cEC103c0B6d7166405F0EbD7087C75a1528E), [bartek.eth](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0x0275b3D54a5dDbf8205A75984796eFE8b7357Bae), [Michael Lewellen](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0xBBD2E01eFB88ce00F8f5b6B9a696966070089392), [yoav.eth](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0x475816ca2a31D601B4e336f5c2418A67978aBf09), [Certora](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0xeEe3Fb3B792C7DDbB6aEF0C440FBC621f4d6fe2D), and [OpenZeppelin](https://www.tally.xyz/gov/arbitrum/council/security-council/election/3/round-2/nominee/0x9316ca66f5f936E3239e4fD2AAAEA5C7b6f3C4cC).