I found some minor problems with the tarball put up yesterday, so I'm releasing an update.
Here are the links to it:
Download: http://mah.everybody.org/mediawiki/1.20/mediawiki-1.20.0beta1.tar.gz
Diff: http://mah.everybody.org/mediawiki/1.20/mediawiki-1.20.0beta1.patch.gz
GPG signatures: http://mah.everybody.org/mediawiki/1.20/mediawiki-1.20.0beta1.tar.gz.sig http://mah.everybody.org/mediawiki/1.20/mediawiki-1.20.0beta1.patch.gz.sig
Public key: http://mah.everybody.org/contact-info http://pgp.mit.edu:11371/pks/lookup?op=vindex&search=0x7956EE477F901A30