A few quick notes.
This is not a static beta process. We don't have a "final product" that we are testing in an effort to get it out the door. The feature set is pretty well locked, but they are still coding on some things. This means that there will be no real progress report until such time as there is a "final product" to finalize and hand out to the GP. Note that I specifically stated that the feature set is pretty well locked. This means that suggesting Rice and Schibo add the ability for it to blend you margaritas is probably not going to happen, though it would be amusing.
Netplay is... going. It's a long process to get it working to the level we would like, so don't expect any news on this for a while.
4 player modes for PD and Mario Kart, not sure, I don't have 4 controllers to test it with. I'm going to try to get some people together and get that going pretty soon, but I'll have to wait to update that until then.
There have been new betas released to the testers since the posts in the screenshots thread, I'll try to post some new shots in the next couple days.
Note that I am not a coder, nor do these views necessarily represent the views of the coders for the product which I am beta testing.
Love, Luck, and Lollipops, everyone.