Here is an interesting post about the 5 most interesting new features in wordpress 3.0: http://mashable.com/2010/05/10/new-features-wordpress-3/
It certainly seems to be going in the right direction – I will be interested to see what can be done with the new custom content types. This could lead to the use of wordpress for the development of richer websitse and web applications.
Now if they would only fix up what has to be the world’s most frustrating WYSWYG editor! Mind you I haven’t yet come across a web WYSWYG yet that could be described as complete.