I believe lady Ashvane burned Teldrassil and it will look like Sylvanas did it.
Wow ... the voice acting has become stellar. Lady Ashvane, Proudmoore and Gen VOs did an EXCELLENT job!
I really hope that these cut-scenes are only a place holders for better ones.
I also remember people saying that Sylvanas wanted to get a part of/a spark from Sargeras' burning sword; there was something like this. Can't quote because I don't save everything I read.
To be honest the Horde destroying Alliance areas is getting old. Theramore, Southshore, Silverwing Refuge, Teldrassil... I would like to see the day Alliance does the same to their areas, it would be a change of pace.
I've just watched all of these. Nice. Well, except the Sylvanas one as nothing happens there. Also, Genn <3