There has recently been a lot of trademark activity over at blizzard. The trademarks include "Diablo", "Frostmorne" and "Darkmoon Faire". We can only hope the recent Diablo trademark activity is leading up to some kind of announcement. Each have to do with the following.
Diablo - "ENTERTAINMENT SERVICES, NAMELY, PROVIDING ON-LINE COMPUTER AND VIDEO GAMES, ON-LINE PUBLICATIONS IN THE FIELD OF TIPS AND STRATEGIES FOR COMPUTER GAMES; ARRANGING AND CONDUCTING COMPUTER GAME COMPETITIONS; ENTERTAINMENT IN THE NATURE OF AN ONGOING TELEVISION PROGRAM IN THE FIELD OF CHARACTERS AND PLOTS BASED ON A VIDEO GAME; AND PRODUCTION AND DISTRIBUTION OF MOTION PICTURES"
Frostmorne - Replica weapons, namely swords and daggers; sword scabbards; sword belts
Darkmoon Faire - Computer game tournaments held on-line and in-game; providing news and information about computer games; entertainment services, namely, providing on-line computer games, and featuring tips and strategies for computer games; downloadable electronic publications, namely newsletters, magazines and catalogues in the field of video game entertainment
Diablo Trademark Info - http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=78770575
Frostmorne Trademark info - http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=77056209
Darkmoon Faire Trademark info - http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=77094533