According to a new report, Samsung does not plan on releasing the Galaxy Tab S8 series this year. Instead, the company is targeting 2022, and it supposedly has another product tier planned, too.
https://www.notebookcheck.net/Samsung-Galaxy-Tab-S8-series-tipped-to-launch-in-early-2022-with-Ultra-model-still-in-development-new-Galaxy-S21-colours-incoming.550253.0.html