I bought tickets, because, beyond all the obvious reasons, it’s still rare relative to Brian’s touring career as a whole to see Al and Blondie there...
BBFC listings and The Bloo say Alan only, no Blondie.
Both the SFJazz/Davies Symphony Hall website and Blondie's Facebook page say he'll be at the SF show, and the venue added his name to the listing after being up for a week or two, so it's not likely an erroneous remnant from a copied and pasted blurb from the summer tour. It's looking more and more like that may be the only show among the eight scheduled. He indeed is not mentioned by any other venues or Brian's pages.
But he should be at the SF show. I'm cool either way.