Another hint is that the Mac Mini July 2011 models have shown up. Since this was released at the same time as the new Air, it should happen soon!
Mac Mini 2011 refurbs have been available for a few weeks now.
They only showed up in the .ca store today. I guess Apple is a bit behind up here...
Just noticed some of the in stock refurb 2010s have dropped in price. The 11" with 128gb ssd was 899 and now is 799 for example. This likely signals the 2011s will be added shortly