With the release of stretch we are pleased to open the doors for stretch-backports and jessie-backports-sloppy. \o/
As usual with a new release we will change a few things for the backports service.
What to upload where
As a reminder, uploads to a release-backports pocket are to be taken from release + 1, uploads to a release-backports-sloppy pocket are to be taken from release + 2. Which means:
| Source Distribution | Backports Distribution | Sloppy Distribution |
|---|---|---|
| buster | stretch-backports | jessie-backports-sloppy |
| stretch | jessie-backports | - |
Deprecation of LTS support for backports
We started supporting backports as long as there is LTS support as an experiment. Unfortunately it didn't worked, most maintainers didn't wanted to support oldoldstable-backports (squeeze) for the lifetime of LTS. So things started to rot in squeeze and most packages didn't received updates. After long discussions we decided to deprecate LTS support for backports. From now on squeeze-backports(-sloppy) is closed and will not receive any updates. Expect it to get removed from the mirrors and moved to archive in the near future.
BSA handling
We - the backports team - didn't scale well in processing BSA requests. To get things better in the future we decided to change the process a little bit. If you upload a package which fixes security problems please fill out the BSA template and create a ticket in the rt tracker (see https://backports.debian.org/Contribute/#index3h2 for details).
Stretching the rules
From time to time its necessary to not follow the backports rules, like a package needs to be in testing or a version needs to be in Debian. If you think you have one of those cases, please talk to us on the list before upload the package.
Thanks
Thanks have to go out to all people making backports possible, and that includes up front the backporters themself who do upload the packages, track and update them on a regular basis, but also the buildd team making the autobuilding possible and the ftp masters for creating the suites in the first place.
We wish you a happy stretch 
Alex, on behalf of the Backports Team