The next release of the XNA Framework won't add anything dramatically new to the content pipeline, but includes a lot of tweaks and bugfixes that didn't make it in time for our first version. This update is mostly about polishing what we already shipped, rather than attempting to boldly go where no pipeline has gone before (but fear not: we have no shortage of plans for going boldly in the future...)
I'm particularly happy about how many of these changes were driven by feedback from our users. If you are a regular on the forums, you will probably recognize most of the things listed below. Never say we aren't listening! And please keep the feedback coming.
So what exactly has changed?
New content types
Runtime improvements
Build time improvements
A breathtaking bundle of beneficial bugfixes
We also added some new methods to the math classes. These aren't specifically part of the content pipeline, but can be useful when writing processors. For instance the new Matrix.Decompose method is particularly handy for manipulating animation keyframe matrices.
And we added per pixel lighting to BasicEffect. That has nothing at all to do with the content pipeline, but I'm still going to mention it because I like shiny things. High quality specular makes me a happy chappie.