1. WarCraft; 2. WarCraft II; 3. Diablo; 4. StarCraft; 5. Diablo II; 6. WarCraft III; 7. World of WarCraft; 8. ?
Today, we were greeted by Diablo himself when entering the Blizzard site. Below Diablo is a timeline with all their titles so far. It seems to be a teaser that there will be an addition to the list of titles, but we won't know for sure until May 19th.
What can be read from these teasers? The announcement will not be an expansion, as some members have speculated over. This conclusion is from the homepage teaser where only full version of their game titles are shown; no expansions.
Many are saying StarCraft, many are saying Diablo. We say five more days of guessing.
Links
Blizzard.com - Will Tassadar greet us tomorrow?
GosuGamers.net - The forum thread