Info requested


I am new to Sage++. I would like to exmine C-programs with Sage.

I was just going through the Mailing Lists sage-users and sage-bugs.
There where some bug-fixes, which one could apply directly (source fragments),
and some bug confirmations ( bug fixed and CV`s).

My questions are: 
  Are some bugs critical, which I should fix?
    If so, where can I get a bug-fix list?
    Or is there a inofficial bug-fixed-version?
  Should I wait for the next official release?
    If so, when is the next release available?

Andre Christanell