i like memes
It's easy to say they're being overhyped after seeing the groups, I don't know why they wouldn't have been coming in seeing as they showed how resilient they can be even when a team surprises the shit out of them.
A lot can change between now and Blizzcon so it's hard to say if they'll come in hot or cold by then but until they stop winning tournaments and actually lose, to non top 2 Korean teams, I thing the hype around them is well deserved.