We are planning to (finally) release Picard 1.4 at the start of February.
There were a lot of changes since 1.3.2, and even more recently (thanks to GCI), so we need testers to identify annoying issues before the release. You can get the current dev version from https://picard.musicbrainz.org/downloads/
Windows users can get the latest dev package at https://github.com/samj1912/picard/releases/tag/release-1.4.0dev7
1.4dev is pretty stable, but you have to know config format changed so it is not very easy to go back to 1.3.2 after installing 1.4 (you can always clear config though). The upgrade from 1.3.2 to 1.4dev should go smoothly (thanks to upgrade hooks feature).
Also, since https://github.com/metabrainz/picard/pull/456, Picard is using ini format to store configuration on all platforms (before the config was stored either in various format files or registry, depending on platform).
Many new features and bug fixes were implemented, and we are still working on few ones.
So, if you have time and you didn't already, upgrade to 1.4dev, and report any issue through https://tickets.metabrainz.org/
We also need translators
Translations are handled through transifex : https://www.transifex.com/musicbrainz/musicbrainz/picard/