Hi Tamika
There is no date yet for when/if the PMP exam will be updated to reflect the contents of PMBOK 7. We're all expecting there will be a revision at some point, but nothing has yet been announced, and as the exam was updated this year, it's probably a little way off yet. The 2021 exam update did (in my opinion) reflect the shift to PMBOK 7 - it feels to me that they updated the Exam Content Outline before the new PMBOK came out, not the other way round! PMI provide 6 months' notice when there is any change anyway, so you would have plenty of time to get your test taken with the current materials.
Basically, don't worry, all the materials you have are relevant and will see you through the exam, even if you take it in 2022.