Beijing will probably be launched as planned next year before any Hong Kong service or any West Coast USA service.
If Hong Kong did get launched I'd be surprised if it was Cathay Pacific. They like flying lots of freight in and out of MAN but are happy for their passengers to code-share through LHR on BA shuttles. Their last attempt at restarting a MAN pax service a couple of years ago ended abruptly over rights to their planned stop off at Moscow..... they seemed much more interested in the MAN-Moscow traffic than the MAN-HKG traffic hence they ducked out of a direct MAN route or a stop-over elsewhere when they hit difficulties over the planned Moscow stop-over.