Lots of new mounts in the Battle for Azeroth. Here's a preview of the 58 we know of so far.

Music from ocremix.org:

'WetGrass Inspired' [Tristram] by AmIEviL: https://www.youtube.com/watch?v=wordp9vBB38
Human Tavern Music: https://www.youtube.com/watch?v=otFQrgkrmlk
Donkey Kong Country 2 Epic Orchestral Medley by RebeccaETripp: https://www.youtube.com/watch?v=VBY2b-641ps
Cataclysm Defenders of Azeroth: https://www.youtube.com/watch?v=lADU8m3qCfU
Calm Before the Storm cover by Super Guitar Bros: https://www.youtube.com/watch?v=_Fu-kHwVHm4
Dwarf Tavern Music: https://www.youtube.com/watch?v=Rx-yE6cvtiM
'The Darkness and the Light' [Ending] by McVaffe: https://www.youtube.com/watch?v=z2MCzeBiZHM