Of course it's just my opinion. I'm here to make it yours.
This release focuses on a new option parser subsystem, improved perl/psgi and ruby/rack support and a new (stable) php plugin. A lot of optimizations have been introduced for the fastrouter and the various threading modes.
You can visit the uWSGI homepage to learn more.
The uWSGI protocol is directly supported in Nginx since 0.8.4. You can find instructions for running your application under uWSGI here.