Victor1 - 5:58 pm on Aug 5, 2010 (gmt 0)
of the 70 plus sites I run about 1/2 of which were hit with the june 3 update, on 3 i changed only the meta keywords on the home page - and sure enough all were measurably boosted in rankings. No other changes took place except the ping after the keyword update. So from my tests at least, it seems to fit into the new agorithm. Unless of course it was just that the site appeared "updated".