Oh interesting - hard to keep track of which version Firefox is up to these days. They should really swap to a system like Ubuntu's - using the date for the version number.
It was released over a month ago too. Has it had any effect on Firefox's market-share? Especially in enterprise? It's a pretty decent test bed for understanding how users react to these kinds of changes. If they just accept them and adapt when forced it shows that we can be more proactive in moving users to better yet incompatible software?