The amount needed in a German blocked bank account to cover living expenses to get a study visa for non-EU students is now 11,208 Euros/year - as of Jan. 1, 2023. I had been anticipating an increase but with continuing high inflation, I would not be surprised to see another rise in the next year or so.
Official information about amounts and conditions on the German government site here: https://www.auswaertiges-amt.de/en/sperrkonto/388600