Lots of new details on the Red Bull Quest
http://www.redbull.com/us/en/esports/stories/1331746950341/red-bull-quest-reveal
It's basically just a quest line with Amanda Holliday where you play through the new strikes and do some Crucible. Not much to it.
Rewards:
Y'know, all the 'new' Ghost Shells seem to just be palette swaps. This one, the Joyride Shell, is simply using the old Frontier Shell skin but it's blue. The only Ghost Shells that uses an actually new shell design are the Competitive Shell , and the Purple Spine Shell which appear to actually re-use the Intrusion Shell polys from Year 1.
It's great that the Ghosts actually contribute something to your stats now, but what about all the others? http://destinydb.com/items#type:4023194814 Kingslayer Shell looks pretty dope tho