In bottles it may be a CA only release but I have definitely seen it on tap in a number of other places including NY, NJ, and NC in the last year.
I overheard a BP rep at a local Atlanta bar saying that the bottles were only in CA for now but would likely be released more widely in the coming months. It definitely seems as though they're planning on releasing more of it in the near future, be it in bottles or on-tap.
As of last night it is on tap at a local restaurant in SE VA, so perhaps it is making its way around soon.