It will either be out on May 19th, or a proper date for when it is going to be released will be announced then. Either way, I think the 19th is the day that you will know for sure what happening.
On that note, this is why Flash is BAD. Every manufacture except Apple is waiting on Adobe here, and this is the exact reason why Apple wants nothing to do with them. Relying on flash means relying on Adobe and they have a TERRIBLE track record.
Everyone rags on Apple for not wanting flash on there devices, but come on Apple has released 3 major revisions of their platform and is about to release a 4th and Adobe STILL doesn't have a full blown production version of flash running on a single device yet. They are the new Internet Explorer, holding the web back.