getfirebug.com has Firebug 1.13 alpha 6
Firebug 1.13a6 fixes 8 issues
Firebug 1.13a6 is compatible with Firefox 25-28
There are just couple of minor enhancements. Again we are mostly focusing and hardworking on adopting new Firefox debugging engine and doing great progress. This work will turn into alpha releases soon (we are yet blocked by missing platform APIs).
In this version, we improved design of the search options panel (see issue 6702):
And Firebug now supports -0 (negative zero), see issue 6631
There are other bug fixes and you can see them all.
Please post feedback in the newsgroup.
Jan ‘Honza’ Odvarko