Really Nice to see Samsung & Google Collaborating on this, hopefully the XDA developers will allow both S4 versions of Android to work on either the Original Samsung S4 with Touchwiz or allow us to use the Google Edition OS. So in the end this should allow for more options for users so that they can have the Manufacturers take on Android or the Developers take direct from Google without having to wait for updates from Samsung which are not as fast at updating their software compared to Google & its development team.
But in the end great news for all the complainers who always complain about the Touchwiz bloat!