Aproximatelly, when new version will be released?
This has been asked for years in the forum and no one can't answer you accurately on when it will be released.
Note that the software is not yet feature-complete (in particular, the Web design is far from done), and the public repository doesn't contain everything already done.
You can see some informative topics on
New forum software.There has been "beta.bitcointalk.org" before but it's inaccessible now.