Your BC235XLT will work with the current Sacramento Region trunked radio system. It just won't have all the bells and whistles of modern scanners. My first trunked scanner was the 235 and it worked very well in 1995/1996
As gmclam stated, it can not monitor "digital" channels and rebanding is in the future. However, there are only a few digital channels in the region and rebanding isn't happening tomorrow, but maybe in a few months or more. I agree with gmclam about the PSR-300 if you want to get a new scanner today. It's my understanding that the PSR-300 will be able to handle the rebanding change to the trunked system whereas most scanners on the current market will not. A new scanner will carry a bit more of a learning curve, it will also have a tremendous amount more bells and whistles, including a tremendous amount more memory to store frequencies. If you have a computer and a bit computer literate, it's best to program modern trunked scanners via a PC connection.
PS
Rebanding is basically a frequency change to the system - all of the frequencies listed in the database will be different.
Links
SRRCS
http://www.radioreference.com/apps/db/?sid=4499
Rebanding
http://wiki.radioreference.com/index.php/Rebanding
BC235XLT
http://wiki.radioreference.com/index.php/BC235XLT