Support of getting generated keys in driver version 8.4devel

Hello!

This is my environment:
Driver version: PostgreSQL 8.4devel JDBC3 (build 700)
PostgreSQL version: 8.3.4

I am looking for getting generated keys support in the driver. The
changelog says it has basic generated keys support. However,
DatabaseMetaData.supportsGetGeneratedKeys() returns false and when I
execute:

con.prepareStatement("insert into tab0 values(default, 444)", new
String[] {"id"});

I am receiving:

Caused by: org.postgresql.util.PSQLException: Returning autogenerated
keys is not supported.
    at org.postgresql.jdbc3.AbstractJdbc3Connection.prepareStatement
(AbstractJdbc3Connection.java:448)

Am I missing something? If not, is the generated keys support going to
be implemented in a future build of 8.4devel?

Happy New Year,
Milosz