Things I read said the 9930 will be coming out for Verizon in June, no idea about any other carrier. It's not a set date yet -- or, it is, but Blackberry just won't tell us.
I am betting first of August but every date you read is only rumor. I do not think the carriers even have set a hard date. They stay mum about these thing as it hurts sales of current and stocked devices at the stores. They are still pushing the Torch if you want a Blackberry! LOL!
RIM seems to have some issues with OS7 and they are working with carriers to fix those minor issues. Idk when, but as far as what retailer like BestBuy Canada concern, 9900/9930 will not be out till the end of August in Canada for sure.
But again take this info as just info and don't relay on them... all of these info are rumors at least for now.