Waiting for PostgreSQL 9 stable version

I just read PostgreSQL 9.0 Beta 2 and it's feature on this. Many new feature there, and drive me to use it in future. Things that I am interested in:

Backend section:
1. Column level permissions: allows specification of granular column-level permissions in addition to table level grants
2. GRANT/REVOKE ON ALL TABLES/SEQUENCES/FUNCTIONS: simplifies permission management by allowing mass changes of GRANTS

Functions and triggers section:
1. Column level triggers: adds support for SQL standard column level trigger support, by allowing triggers to only fire if specific columns are mentioned in the UPDATEs SET list
2. WHEN clause for CREATE TRIGGER: adds support for a boolean expression to be checked if a trigger should be fired or not
3. RETURNS TABLE: SQL standard RETURNS TABLE clause for CREATE FUNCTION.