Just quick stuff you notice in Beta, well at least that I observe.
1. Death Knights are everywhere, like a million of them many at +70.
2. Ever Paladin I see seems to be RET or Holy Spec. I rarely see a Protection spec Paladin anywhere.
3. Talk of RETs been OP and their high Crit kills dominate zone chat. Will RETs get themselves needed?
4. Almost ever Instance group seems to be in LFG looking for a Tank and Healer in zone chat. Uhhh but there are a million DK's in Northrend I thought DK suppose to be the new Tanks.
5. People at the current cap of LvL 77 are already Bored. Imagine that.
6. Almost everyone seem to wear Epics and you see lots of T5 and T6 at 70.
7. Almost all Hunters seem to have a Devilsaur for a Pet.
8. Server crashes is a constant occurance.
9. Massive Paladin Stanina gives lots of Spellpower for Tanks.
10. Protec Paladin grinding is still slow, just more button mashing vs going afk in a fight.