Don't worry! CLAMP is getting on that right now. They'll be sure to tie in CG with the rest of their manga. Aren't you guys excited?
So far, we've discovered that C.C. is Yuuko's daughter, whom she sent to the CG dimension in hopes of destroying God and opening up that dimension for commercial transactions.
Syaoran and Suzaku will have an epic showdown, but since both have God Tier plot armor, the outcome is uncertain.