Version History or Change Log for beta releases?

[Maxim.Sakhankov]

Hello birdy,
In general, when we update a beta version, we post a link to it in a thread with a problem description as a report of the problem solving, so we never did a beta-version change log. If we decide to make such log we'll definitely post it.

[birdy]

I was wondering if there is a page to access "Version History or Change Log" for beta releases?
It is well mentioned for official releases but could not find this info for beta.