Debian LTS development
Example apt source for squeeze-lts
deb http://ftp.de.debian.org/debian squeeze-lts main deb-src http://ftp.de.debian.org/debian squeeze-lts main
Uploads
To upload a package simply add "squeeze-lts" to the target distribution. If you use dput-ng, you need to apply the patch from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=745806. After that "dput CHANGES file" is sufficient.
Versioning of updates
The versioning follows the conventions already used in security.debian.org. Historically codenames have been used as version numbers, but this was changed some time ago as version numbers are more deterministic.
If a package already e.g. had a +squeeze1 update, use +squeeze2 for the next update.
If a package hasn't seen an update, use +deb6u1 for the next update.