This is a great addition, and I love the instant updating! That solves a lot of problems for my application. Any idea of when it might be released for real? Hard to know if it's safe to develop against this feature.

The database UI lets you select multiple rows, but not delete those rows as a group. Frequently during the development phase you're going to want to delete a bunch of rows (or all rows) at once.

This is a workaround, but you can create an action within the app to do a CSV export.