Lukas Smith has posted about the release of MDB2 2.1.0, the latest version of his blend of the PEAR MDB2 package and the PEAR DB package.
I decided to go with a bump of the minor version for the next release of MDB2 because there are a number significant changes and additions. One of the big changes is dropping array_key_exists() whereever possible.
Aside from that the two main features are custom datatypes and query rewriting via the debugging infrastructure. The custom datatypes were already explained in a previous blog post, so I will not go into detail on them again here. However the debugging infrastructure is probably one of the things people were not aware of before. Now its obviously even more powerful.
He includes code to demonstrate the powerful debugger that's been implemented. He also mentions two other people that have come on board to help with some of the development on the project - Justin working on the Oracle driver and Nathan on the SQL Server/PostgreSQL driver.