If we take as rule that new Lich King has to meditate for at least 5 years after coronation, then Bolvar should be awakened approximately on February 2015, which is probably 6.1 or 6.2
And even if Blizzard decides to not touch that untill next addon, it would be dissappointing to have Bolvar asleep for 7+ years.
P.S. I believe so because time in Azeroth follows real time IIRC and Lich King died in February 2010.
What do you think about that? They have created another version in this addon, would it be fitting to have new Northrend in next one?
Mistake in title: Half a year. Not 1 year.