I've just uploaded a new release of MinGHC, including GHC 7.10.1 and cabal-install 1.22.2.0. This release can be downloaded from:

https://s3.amazonaws.com/download.fpcomplete.com/minghc/minghc-7.10.1-i386.exe

In the process, I also needed to upload a cabal-install binary for Windows, which is available at:

https://s3.amazonaws.com/download.fpcomplete.com/minghc/cabal-install-1.22.2.0-i386-unknown-mingw32.tar.gz

I've tested this distribution, but only lightly. Feedback from others would be useful :)