From Kimberly at The UCL Practitioner:
In today's "Notice of Forthcoming Filing," the [CALIFORNIA] Supreme Court announced that it will be issuing its decisions in Mervyn's and Branick on Monday, July 24, 2006 at 10:00 a.m. When the decisions are posted online, they should be available here (Mervyn's) and here (Branick). I will do my best to put up a report on the decisions at some point on Monday (workload permitting).
I'll be watching too and I'll post about it as soon as possible. Details here.
UPDATE: The opinions are now available at the links above. Bottom line: Prop 64 IS retroactive, but plaintiffs can move for leave to amend to cure any defects.
UPDATE 2: Here's an article from the AP about the two opinions.