As part of our release process, we are announcing a feature freeze for June 16, 2021 at 16:00 UTC, after which only fixes will be merged until the official 0.5 release. Please submit your pull requests sooner rather than later, as preference will still be given to fixes rather than destabilizing features.
We plan to have a significantly shorter release cycle for 0.6, so do not worry if your desired feature is not included in this release. We will also be announcing some updates (in general) to our release process, so stay tuned!
Best,
The Neovim Core Team