Block Exposure Control : Instead of filling up the blocks page with every vocabulary you can now control Block Exposure. If you only need to have one Vocabulary available then you only have that one listed on the block page. If you need them all, then you can list them all.
This is first 5.x compatibility release. It features same functionality as 4.7.x version with no bugfixes. Javascript is ported to use jQuery. There may be some issues with IE6, but it works. Enjoy. If you want more features or bugfixes, wait for 5.x-2.x release.