| V0.1 Initial Version | 2022-12-26 | Initial Version |
| V0.2 Add Tiered Pricing | 2022-05-22 | |
| V0.3 Add Cancel All | 2023-06-09 | |
| V0.4 Add Security List | 2023-06-21 | |
| V0.5 Add Executing Firm | 2023-10-02 | |
| V0.5.1 Update | 2023-10-09 | Symbol is Optional, Time In Force IOC |
| V0.6.0 Post Trade and State | 2023-11-02 | |
| V0.7.0 Finalize | 2023-11-07 | |
| V1.0.0 | 2024-03-01 | Party blocks for launch |
| V1.0.2 | 2024-03-20 | Corrected Cash |
| V1.0.3 | 2024-04-19 | Added Intermediation Indicator |
| V1.0.4 | 2024-12-03 | Added Contra DTCC in PartyRole 18 |
| V1.0.5 | 2024-12-13 | Added 41 OrigClOrdID to replace and reject responses |
| V1.0.6 | 2025-01-30 | Send a Z on OB feed on system halt |
| V1.0.7 | 2025-02-18 | Add PRODUCT to IOI messages and MD Snapshot/Incremental messages |
| V1.0.8 | 2025-02-26 | Add TimeInForce |
| V1.0.9 | 2025-03-31 | Add SettlType (for future dated settlements) |
| V1.0.10 | 2025-04-03 | Add Order Origination Trader |
| V1.1.0 | 2025-04-29 | Merge RFO FIX Spec |
| V1.1.1 | 2025-06-23 | Remove Open and Close Prices from MD, explain MD messages |
| V1.1.2 | 2025-11-04 | Add optional yield to messages |
| V1.1.3 | 2025-12-11 | Add Product to some execution reports |
| V1.2 | 2026-01-07 | Add FOK and AON |
| V1.2.1 | 2026-03-11 | Add Spreads to IOIs |