The 14z and 15z seem a lot like Acer's Timeline series, actually. The 11z, as you can tell by the way it's designed, looks more like a follow-up to Dell's Inspiron Mini netbooks, on the other hand. Gotta love that super-wide trackpad on it.
Just taking a guess based on what we have seen in this market segment. If it turns out to be an 11" notebook with a core 2 duo ULV CPU (1.6-1.8 GHz?) and Nvidia 9400m I think I might pick one up immediately.
Of course if it is a new Atom toting netbook I won't have much interest. It could be possible, if they want to replace the Mini 12 (I was always under the impression that it didn't sell too well).