I notice from your blog that you are now testing all the products with Windows 7 and that so far DW CS4 seems to run OK and that Sculptor 3 is OK. You also state that you don't expect any problems with the other extensions.
When we went through a similar scenario when CS4 was released, you put a page up that gave the progress of each product. Can you do something similar with Win 7? I think it might be beneficial to both current and future customers.
Just a thought.