Psycopg will be at PGDay Italy in Rome, on December 10th.
Looks like building Psycopg on OS X is tricky: the code needs no tweak, but linking against the right library seems problematic.
We have just released a new testing package: psycopg 2.3.0-beta1!
There are several new features being prepared in the upcoming Psycopg version. The documentation refers to it as release 2.2.3 but it may be ultimately released as 2.3. The main target of the release is to expose some of the new features introduced in PostgreSQL 9.0.