I registered my code long ago and still haven't received an invite, I know a lot of ignorant people were claiming this wave was to "get the rest of those spoiled blizzcon people in" but obviously this isn't the case. Can any blizzconners confirm or deny getting into the beta THIS wave (as in the one that went out 7:30 PST March 4th)?

Much appreciated, and hopefully the next Blizzcon wave will be happening shortly. My guess is they're seperate waves because it's two different systems, a key system and an opt in system.

People that just recently signed up with a BlizzCon key usually did not make it into the last wave, of course also not into the waves before. If you signed up a long time ago (i.e. like before Beta started), you can always contact our support teams.

Edit: Phrasing it nicer.

Well, there are always certain cut-off dates, especially for promotional codes like BlizzCon and the Worldwide Invitational.