What Happened To The Delta Web?

A while back I commented that I should look into the Delta Web project – I’m doing some work in this area now but nothing more seems to have happened. The mock schema for tracking deltas only works on an element level so is useless for describing changes to XHTML documents which is a shame.

Anyone know of any further progress or other related projects in this area?

Oops, forgot the direct link to the Delta Web proposal by Andy Roberts.