The Kalimdor Cup has been added to the in-game calendar on the 10.1.5 PTR!
The event is currently slated for August 15 and will be available for 2 weeks, until August 28.
During the Kalimdor Cup, you can complete Dragonriding courses in Kalimdor and Eastern Kingdoms to earn a currency to unlock a teal color option for your Windborne Velocidrake and a cosmetic armor set.
Achievements for Eastern Kingdoms are in and there will be 14 courses for you to complete.
Kalimdor contains 16 Dragonracing courses. You can complete all courses in reverse too.