I tend to look at Giveaway Radar first as an overview. Even though it is not always accurate about freebies on BitsDuJour. Previously I used to wait for BitsDuJour's daily email which was sometimes  delayed. The daily email gives the discounted or free prices at a glance. I'm not advertising it, as it could be considered spam by some :D.

Giveaway of the Day has definitely gone downhill - with some of the Giveaways being 3 to 6 month licenses only - after that "license" period the software expires. I prefer the old "no support, no expiry" freebies.

That might be useful on (very) rare occasions.

It is Firefox 43.0.1 not 43.01
US English release notes Firefox 43.0.1

Ah, MilesAhead beat me to it:

Just one item in 43.0.1 notes.  To do with MS signing blah blah

(Edit: although some may prefer yadda yadda)

https://www.mozilla.org/en-US/firefox/43.0.1/releasenotes/

-MilesAhead (December 19, 2015, 07:56 AM)