Techcrunch: Most Firefox updates over the last few months were relatively minor. Firefox 13, which is now available for download and which will go out to existing users tomorrow, is a bit different. This update actually introduces a number of consumer-facing updates that finally bring some of Firefox’s features up to par with Google’s Chrome. Most importantly, this new version finally features the long-promised new home and new tab screens.
Pretty sure my Firefox has been doing that for a long time.
On another note though, it feels pretty stable so far but I guess time will tell. Memory usage is also alright...I'm about 300MB, when I would normally be at 500+MB of temp cache.
Anyway, will update to the latest FF version.