I was poking around on ScionLife and decided to go to the earliest posts in the 2nd Gen xB forum and found the following topic titled, "xB replacement no longer to be named xB" from mid 2006.

just the dealer i'll be working for , a regional scion exec , northern cali toyota exec , and dealers everywhere. as well as every toyota tech i work with for my promotional job.
each model/nameplate gets 3 years of life then dead.