Following severe sommunity backlash, Valve has decided to give the fans what they want and have announced that the Diretide event will be delivered along with the next big Dota 2 update.
After a long time working on a huge update to be shipped into Dota 2, the developers decided that it was for the best to leave Diretide for this year and focus on something more important in the long run. Valve admit that they underestimated just how much the community wanted Diretide, and have decided that the event will be added into the game when the next update comes around.
Lack of communication is something that was apparent in recent weeks, and Valve have admitted that they were at fault. They will be looking to rectify this and are sure that the mystery update will leave us all more than happy to forgive them. However, Valve have made it clear that now is probably a good time to stop harrassing local Volvo dealerships.
The event will be coming with a few changes to make it more 'fun'. No other information has been released about the specifics of the event at this time, but you can read the full announcement here.