This year the app opens May 3. You do not need a transcript submitted at the time of application for TMDSAS (they will ask for it in the fall).
You DO need to know your official final grades for Spring term 2021 so you can enter the grades manually on your TMDSAS application.
They are not allowing people to submit this year until May 17 to encourage y'all to proofread!
I attached the latest chart of TMDSAS scores & grades for EY 2020.
36% of matriculants have an MCAT in the 508 to 513 range, so apply to them all if you wish.