It's possible for administrators to block the ability for users to start a Power Apps trial. Therefore, it's worth checking with your adminstrator to see if they have such policies in place.
The first Microsoft-sponsored Power Platform Conference is coming in September. 100+ speakers, 150+ sessions, and what's new and next for Power Platform.
Power Platform release plan for the 2022 release wave 2 describes all new features releasing from October 2022 through March 2023.
Join us for two optional days of workshops and a 3-day conference, you can choose from over 130 sessions in multiple tracks and 25 workshops.