When will the official release of the next version of the client with these features?
There's one tricky accounts-related bug that I think needs to get fixed before the next release: https://github.com/bitcoin/bitcoin/issues#issue/25
The only other possibly critical bug is: https://github.com/bitcoin/bitcoin/issues/#issue/28
... although I haven't been able to reproduce it, even running bitcoind on top of the 'valgrind' memory checker.
I plan to pull patches into the integration git branch early next week, and I'll ask for help testing the result.