Is there a list anywhere of when official tournaments will start? For instance, I know the quick knockouts starts in April, and a regular one started in March. Are others planned yet?

An official tournament starts each month.

The sequence is a standard game tournament with a time control of 3 days/move followed by a standard game tournament with a time control of 1 day/move followed by an opening thematic tournament with a time control of 3 days/move.

The May tournament should be an opening thematic. The sequence should start again in June.