I read this on another forum. They have always been right so far with the challenges, so will post it this time.
Pinochle - Make 5 royal marriages in trump suit.
Vaults Of Atlantis Slots - win 3500 tokens
Accualy it is 20 royal marriges.
I never look that far ahead for the weekly challenges. I update MPB with what Pogo officially has listed when I first wake up (even before I answer emails or check sites) on Wednesday mornings. This helps ensure accuracy. My own reputation is on the line with MPB, and people depend on me to make sure that all the badges are accurate, otherwise their own badges aren't accurate.
No disrespect to any other site, I just can't trust anyone with the potential for misinformation with my rep being on the line. :)