Bitcoin Forum

I use Bitcointalk almost daily. I am wondering if there are free tools or (browser) apps which could be used to keep track of my activities on the board (like answers on threads etc)?

Really good question.  Also a mobile app would be great too.

While not directly answering your question, there is an extension for Chrome and another browser.  But I have not reviewed the source code so use at your own risk:  https://bitcointalk.org/index.php?topic=1188361.0

Nothing interesting really , the only thing is what the above user pointed at as far as I know .
Developers  can't do much advanced things without an API honestly , otherwise they would make a lot of nice stuff . Hopefully an API will be available on the new forum software .

Has there been published a release date of the new software yet? I followed the discussion 1-2 years ago, but could not find any date.

there's no fixed date on that. in a way I think this is better because people won't expect it to be released on xx date only to be delayed because some bugs.

You can activate notifications via email, this way you will get an email when someone post in a topic.

A mobile app does exist, but it hasn't been updated in years and kinda sucks. I am actually trying to write my own Android app but first I am asking the writer of the other app for his source code so I can update, fix, and maintain it.