Checked this morning and Costco now has 2010/2011 ABD trip dates on their travel website and the cash card offer is still there.
They do not seem to be offering all the tours. I noticed no Costa Rica or China, the 2 I am most interested in.
Please keep in mind that your Costco card arrives 4 -6 weeks after your Adventure and is good at Costco.
Dreams Unlimited Travel is offering an Amex card which will arrive prior to departure and is good at any place that accepts American express.
Just wanted to point out that huge difference.
The costco card is only a bit better then Dreams Amex Card.