From the Haas admit slack group:
Thank you for reaching out with this question. While this unexpected hurdle has caused complications for the campus - it will not result in any existing offers being rescinded. Rest assured you and all other admits on this thread have your seats secured. It is our undergraduate program that will bear the largest enrollment reduction. No mention of what it means for R2 seats though, but I can't imagine them sacrificing a lot of seats from the full-time MBA program vs. the part time ones, but thats just my thought