The main change in this release is that PyDev will now consider .pyi (stub) files when doing type inference, although there's still a shortcoming: the .pyi file must be in the same directory where the typed .py file is and it's still not possible to use it to get type inference for modules which are compiled (for instance PyQt).
I hope to address that in the next release (initially I wanted to delay this release to add full support for .pyi files, but there was a critical bug opening the preferences page for code completion, so, it really couldn't be delayed more, nevertheless, the current support is already useful for users using .pyi files along .py files).
Also, code completion had improvements for discovering whether some call is for a bound or unbound method and performance improvements (through caching of some intermediary results during code completion).
Enjoy!