No word in the SJC local papers about a Stansted service. It would be nice, provided that there are reasonable connections onward to the continent from STN. The lack of AA metal from the Bay Area to Europe, combined with the BA trans-Atlantic earning problem, is my single biggest issue with AA/OW. Alternatively, if I could use VIPs on BA (and earn miles), problem solved!
From what I've seen of the SJC-NRT flights lately even that route doesn't appear to be doing too well, so adding another international non-stop seems sadly unlikely at present.