My kitchen was removed from my configuration, without notice, in July - even before I had a guide. I called several times for an explanation. Then when I got a guide the guide also confirmed that it was removed so they could fulfill my order and that I would be able to add it back in later at the original price when it was available. I do have this in writing. I finally got my R1T at the end of September.
I think this only applies if you had the kitchen in your configuration and they were the ones to remove it - you can't add it in yourself a year from now and expect to get the old price.