Reading the web pages:
MM21/index.html: Version (2.1a2, released on 11-Jul-2001) is the current stable GNU release.
download.html: Version (2.0.6, released on Jul 25 2001) is the current GNU release.
Correct to name 2.1a2 a stable release? Somewhere on the lists Barry Warsaw didn't give a garanty for a smooth upgrade path between the alpha releases. Or is 2.1 on the horizon, so that it's more work to change the web page ;-)