The bottle-0.11-rc1 development branch is stable for some time now, widely used and excessively tested. There is no reason to not release it. So, here it is:

Upgrade Notes

With this new release, bottle-0.10 becomes 'old stable' and support for bottle-0.9 runs out. If you are still using bottle-0.9 (or lower), you should consider upgrading. Bug-fixes are only provided for 'stable' and 'old stable'.

Bottle maintains backwards compatibility to 'old stable' as usual. If you fixed all deprecation warnings in your bottle-0.10 application, it should run just fine after the upgrade.