| LS | Title | From | To | Approval date |
| SG21-LS236 | LS/r on HEVC multi-layer profiles, chroma subsampling and bit depth combinations (3GPP TSG SA4-S4-261360) | SG21 | 3GPP TSG SA4; | 2026-07-17 |
| 3GPP TSG SA4-S4- 261360 | LS on HEVC multi-layer profiles, chroma subsampling and bit depth combinations | 3GPP TSG SA4 | SG21; | 2026-05-15 |