Gacrux

(No blog post)

• SIP-106 L2 Debt Register fix

No audit - reused older audited contract to fix debt issue on L2 caused by skewed pool from initial test involving 1 wei.

Castor

https://blog.synthetix.io/the-castor-release/

• SIP-60: New Escrow Contract & Migration
• SIP-102 Support SNX on L2 with Optimism
• SIP-105 Multi-collateral Liquidation Bug Fix

Audit: https://iosiro.com/audits/synthetix-castor-release-smart-contract-audit

Shaula

https://blog.synthetix.io/the-shaula-release/

• SIP-97: Multi-collateral loans — This SIP allows users to borrow Synths against ETH and ERC20 collateral. Initially, the system will support borrowing sUSD or sETH against ETH, and sUSD or sBTC against renBTC.
• SIP-100: Resolver and cache improvements — Improves the ‘AddressResolver’ to improve protocol upgrades, reduce gas of deployments and further decentralization.
• SIP-103: sUSD shorts — This SIP allows users to short Synths against sUSD. This mechanism provides an alternative to iSynths for users seeking inverse price exposure. While these positions require collateral, they return the sUSD proceeds of the sale to the shorter, which can then be deployed productively throughout DeFi.

Audit: https://iosiro.com/audits/synthetix-shaula-release-smart-contract-audit

Adhara

SIP-98 Re-implement double exchange fee rate on swing trades

Audit: https://iosiro.com/audits/synthetix-shaula-release-smart-contract-audit (report combined with Shaula release)

Regulus

https://blog.synthetix.io/the-regulus-release/

• SIP-94 Virtual Synth Fix to Ensure Settlement Is Connected

Audit: https://iosiro.com/audits/synthetix-mimosa-release-smart-contract-audit (bundled with Mimosa report)

Mimosa

https://blog.synthetix.io/the-mimosa-release/

• SIP-89 Virtual Synths
• SIP-91 Debt Cache Contract
• SIP-92 Historical iSynths Pricing Tracks When Last Frozen

Audit: https://iosiro.com/audits/synthetix-mimosa-release-smart-contract-audit

Deneb

https://blog.synthetix.io/the-deneb-release

• SIP-83: Total Issued Synths (Debt pool) Snapshots
• SIP-88: ExchangeRates patch - Chainlink aggregator V2V3
• SCCP-51: Update sDEFI index
• Resume synths paused previously by SIP-84

Audit: https://iosiro.com/audits/synthetix-deneb-release-smart-contract-audit

Fomalhaut

https://blog.synthetix.io/the-fomalhaut-release/

• SIP-77: Staking rewards contract
• SIP-85: EtherCollateral for sUSD Loans
• SIP-86: SIP 86: ExchangeRates Chainlink Aggregator V2V3
• SIP-87: Add iETH incentive to RewardsDistribution

Audit: https://iosiro.com/audits/synthetix-fomalhaut-release-smart-contract-audit

Pollux

https://blog.synthetix.io/the-pollux-release/

• SIP-36: Chainlink Phase 2
• SIP-63: Trading and volume incentives
• SIP-64: Flexible contract storage
• SIP-75: Freezing iSynths with public function with SNX reward
• SIP-76: Chainlink warning flags integration
• SIP-78: Reset iSynth does not trigger circuit breaker from SIP-65
• SIP-84: Pause Synths Below Open Interest Threshold
• SCCP-43: As part of the Pollux deployment and transition to Chainlink Oracles a number of SCCP controlled variables need to be updated to improve trading UX and reduce front-running attacks.

Audit: https://iosiro.com/audits/synthetix-pollux-release-smart-contract-audit

Pollux (kovan test release)

Kovan test release of SIPs 64 and 76.