We had pretty much of testing for 2.3 and currently there is only one issue pending, which is a pull-request from Ralph Bean regarding request extensions.
As soon as that issue is resolved (i have not merged it in as I suspect it might break backward compatibility with 2.2) I would like to push on pypi TG2.3 stable release.
So I can move forward working on 2.3.1 with config milestones and maybe release bugfixes thanks to wider user base.