hidek from Mobage, one of the biggest social networking site in Japan, releass Plack::Middlrware for OAuth. I believe this is an extraction out of Mobage's OpenSocial platform, now running on Plack. Kudos to hidek and mobage developers on this!
I just shipped Starman 0.2000 to CPAN. This release contains bug fixes from Graham Barr and Patrick Donelan on rare 100% cpu spin loops and a bug in Keep-alive handling on HTTP/1.0, but also has a major incompatible feature: preloading apps.
As they promised, uWSGI plugin for PSGI is now open sourced. This plugin embeds the perl interpreter to the uWSGI server. There is also 'uwsgi' (lower case) Plack handler that speaks the uwsgi wire protocol (like SCGI) available on their repository.