- There was a big regression in 0.50 with regards to download speeds. Transfers were a *lot* slower than 0.40. To backport this fix would be very complex as there have been a lot of changes since 0.50 was branched.
- DHT support is now good enough for me to activate by default. This was my milestone for releasing 0.60.
- There have been a number of other important bugs fixed aswell (including a critical one with UdpTrackers) which need to be released.
- There have been a number memory/performance optimisations since 0.50 which would be nice to release ;)
So, if you're using MonoTorrent, I urge you to check out the branch (when it is created) from http://anonsvn.mono-project.com/source/branches/bitsharp-0.60.
Until I create the branch, check out revision 117059 of monotorrent from svn. If you have any bugs/issues, let me know and I'll try to get a fix in for 0.60.