Sapphire 0.5.4 and 0.6.1 are set to release on February 22nd. Sapphire 0.5.4 is part of Juno SR2 and 0.6.1 is being released concurrently.
Any adopter using 0.5.x or 0.6.x line should review any unreported or outstanding issues and highlight those that need to be resolved before the release. While the release is still four weeks away, due to various lockdowns, it will become progressively difficult to include additional fixes as we get closer.