After Wil's rousing call to arms this morning for release 1.6, Jack Sleight and I are happy to say that the newly accepted proposal for Zend_Db_Table_Plugin is now in the incubator, ready for those adventurous souls who like to mess with shiny new components. Please be aware that it really is in its alpha stage, and no unit tests or documentation exist outside of the proposal.
With that disclaimer out of the way, I can say the plugin architecture is relatively stable and we're looking for feedback and bug reports from anyone who can spare the time.
Essentially the plugin architecture allows you to attach observers to Tables, Rowsets and Rows, and has hooks for pre/post operations in each component as appropriate:- pre/Post init, fetch, save, insert, update and delete. The row component also has hooks to allow your plugin to act as an intercepter for getting/setting column values as well, so you can now write modular plugins to take care of encoding/decoding values on-the-fly, write auditing plugins, and a whole range of fun stuff.