Honda UK has dropped the GT version from the line up so now it's only 2. I thought it was too good to be true having HID, leather, heated leather, glass roof, etc, etc. Interestingly we only got front fogs on the, now, deleted model and nav was only an option on the GT. I think before the car is finally released here in Blighty there'll be a few more changes. I remember the same with the Gen 3 Prius this time last year too.
"Honda Cars UK
Hi, Peter. Don't worry: there will be a GT grade for the CR-Z when it launches - a hiccup with the site today means that it's currently not showing. Thanks for bringing this to our attention and we're working to get it fixed. The GT grade will be available at £19,999, with HID xenon headlights, heated leather front seats, panoramic glass roof, front fog lights and more. I'll let you know when all the details are back up"