MiKTeX 20.12 has been released on December 14, 2020.
--enable-pipes (TeX engines) are deprecated and will be removed in a future release. If specified, they now don't have any effect.
- 597: xetex rounds all image sizes to integer pt values
- 652: miktexsetup.exe: MiKTeX encountered an internal error.
- 659: Check for directory that executable doesn't have permissions for causes crash
- 666: miktex (lualatex.exe) fails to run from flask subprocess
- 668: expand tilde prefixes
- 669: testing if pipes are enabled.
- 672: miktex-mf (or maketfm) doesn't find .mf files in the current directory