Release is this year. Beta this summer.
Do the math:
- Blizzard beta's are mostly lasting 3-4 months.
- Beta starts this summer
- Blizzcon is in November
Release: Probably on Blizzcon this year!
Even more:
Blizzcon is a great opportunity to make the game popular. So visitors gets a special card in their goodiebag. Possibility exists that virtual ticket owners gets one too.