The 15.10 frameworks were added to the stable overlay seeds because of bug: https://bugs.launchpad.net/ubuntu/+source/click/+bug/1456328
This was during the times when we still didn't have any idea of our own for new frameworks on the stable system. Since we decided to follow the 15.04.x naming now, it's valid to have those removed.
The 15.10 frameworks were added to the stable overlay seeds because of bug: /bugs.launchpad .net/ubuntu/ +source/ click/+ bug/1456328
https:/
This was during the times when we still didn't have any idea of our own for new frameworks on the stable system. Since we decided to follow the 15.04.x naming now, it's valid to have those removed.