I'm particularly interested in item number two, the UC3 based wifi shield. H&D had been working with Atmel for some time to create code libraries so that a 32bit Atmel UC3 can be used to drive the H&D wireless wifi solutions. H&D wifi comes in two flavors. The first is similar to a roving networks module, that you talk to using serial and send it commands.The second is one that operates at a much lower level, and therefore requires something like the Atmel UC3 CPU.
The second approach should leave plenty of processing power to to other things in addition. For example, run a fairly high end web server.
I am in the process of designing just such a shield, but it looks like I should hold off and see what Atmel comes out with first.