MS Natural Wireless Laser Mouse 6000

[gorobei]

I've played with one at the stores, the shape works for me. But after reading the reviews, I don't think I want the current version's features.(non click scroll wheel, non-rechargable, instaview on the middle mouse click, poor range) I would actually prefer a wired version.
http://www.everythingusb.com/m..._laser_mouse_6000.html

So how long does it take MS to come out with the next iteration of the product line?