The following is from an TDF email I just received about the 3.5 release:
In addition, for the first time in the history of LibreOffice, we will be enabling the online update checker, which informs users when a new version of the suite is available.
"We inherited a 15 years old code base, where features were not implemented and bugs were not solved in order to avoid creating problems, and this - with time - was the origin of a large technical
debt," says Caolán McNamara, a senior RedHat developer who is one of the founders and directors of TDF. "We had two options: a conservative strategy, which would immediately please all users, leaving the code basically unchanged, and our more aggressive feature development and code renovation path, which has created some stability problems in the short term but is rapidly leading to a completely new and substantially improved free office suite: LibreOffice 3.5, the best free office suite ever."
I personally think TDF have done a superb job with LibreOffice and tend to agree with the last sentence above.