Is the original development inactive? I think it would be at least somewhat
anti-social to switch to a non-friendly fork (no idea if that's relevant
here). What are the circumstances around the fork. I think that's at least
socially significant.
I am no expert here. Looking at source force, the latest stable release of (1.2.3) mysqldb was 2010-06-17 (with the corresponding windows msi being generated 2012-09-05).