Dota 2 Plans

A post on the Dota Blog has details on upcoming updates for Dota 2. Valve discusses plans to launch the new season in their MOBA on December 1st, a version 7.28 patch and new hero to follow in mid-December, and the launch of the new season of the Dota Pro Circuit on January 18th:
As we mentioned in the previous Dota Plus update, the new season will be starting December 1st and it will feature a seasonal quest reset, a new seasonal treasure and more. We have also started rolling in backend changes to gather data for the upcoming Overwatch features. When fully implemented, this tool will allow users to review suspicious matches and help identify bad actors, in addition to our existing systems.

On the gameplay front, our original plan for the new hero was November 30th, however she needs a bit more time to cozy up for the winter. We will be releasing her, along with the 7.28 gameplay update, in mid December.

Finally we are excited to announce that the 2021 Dota Pro Circuit will start on January 18th. 16 teams within two divisions will compete in each of the six Regional Leagues. The best from each region will also qualify to the first Major of the season. More information on schedule and details will be available soon.