I am looking for the most reliable and official way to find:
- Next date Project Catalyst starts a new cycle
- Dates for the phases in the current cycle.
As you can find here there is a link to IdeaScale portal and link to Telegram chat group in which they announce all new events (Crowdcast, Fund cycles, etc.).
Basically every 6 weeks we have a fund round but sometimes because of technical or other reasons there are delays (as with Fund 4).
You can also subscribe to the email newsletter to receive the latest updates or to check in Cardano forum.