I also saw the change today. Initially, I thought it was my fault that I got confused with November deadlines. But after seeing this post I’m reaffirmed. What can be done about this? Is there a way to register for August dates now? Meanwhile I’ve mailed them my concerns.
It looks like this change is real, i.e. the registration window is now closed. In 2020 during the Covid exam cancellations, CFA Institute has moved deadlines around without notice so this won’t be the first time this has happened.
I assumed I would be able to register for CFA L2 before 4 May 2021 as this date was previously advertised, but now see the deadline was brought forward to 22 April 2021. I’ve emailed them my concerns. I don’t recall being notified about the change.
Very frustrating when you’ve already invested effort and money in preparing for the exam!