On top of the Pokemon Black 2 and White 2 game announcements (if you haven't seen it yet, get the details here), Kyurem has received two new forms to go with his previously unlearnable, but perceived signature moves, Freeze Shock and Ice Burn. These are Kyurem's alternate forms.
EDIT: It has been confirmed that these are Kyurem's alternate forms, which are named Black Kyurem and White Kyurem, respectively.
More importantly, now that we know for sure that Kyurem has alternate forms and not just special event moves, this might help Kyurem on the competitive side of things. The moves themselves aren't useful since they don't break Protect (y u so special Giratina?), but an alternate form just might change it's stats to be more offensive than being moreso balanced; hopefully it will be faster. It's typing has been confirmed to not be changing, unfortunately. It's pretty obvious it's alternate forms wouldn't forsake STAB of said signature Ice moves, so if Kyurem's stats don't change, it still won't be OU material sadly.
Interesting news to say the least, but nothing... game breaking.