Excerpts from Olaf van der Spek's message of 2016-10-15 17:59:36 +0200:
> Package: mysql-server
> Version: 5.5.52-0+deb8u1
> Severity: wishlist
> Dear Maintainer,
> What's the plan for MySQL 5.7? AFAIK it was released in April, will it be
> included in Stretch?
The release and security teams have decided that MySQL will live only in
unstable for stretch due to the perceived complications with tracking
security patches in MySQL.
I have not heard anything from our most excellent active maintainers,
but I suspect they may decide it's not worth it to do the work to ship
5.7 in unstable only.
If you disagree with this position, I suggest you email the security
and release team to see if there's anything that can be done to change