omg Not again this &%$#
Read all 3 links HERE.
1. Big NO! to both WoD/Legion toggle
2. NO! to New models
3. Yes! to shadows and weather/water/whatever(not spells) effects.
The END.They never told that are going to use new client, problem? None of those who claimed this couldn't cite any official quote, can you? But even if we assume that this is true, we nevertheless were promised Blizzard-quality product, or are those just buzzwords? They coped with removal of old models, I think that there shouldn't be any problems with new too. So we'll check how much their promises really worth.
ps. I saw what you did on the first page and you were explained that been wrong. So your personal opinion has no power here.