It’s obviously unclear if he’ll actually be taking part in any Defenders episodes — though not altogether unlikely — and Netflix might not have wanted to put a full Punisher panel together without any kind of big promotional pushes prior to SDCC’s arrival.
That said, Netflix could very well put out the first Punisher trailer on Monday, giving the show a much heavier presence next weekend.
It’s more than possible that something bigger will get revealed at Comic-Con next week, when The Defenders cast and creators take the biggest stage in fandom, with Jon Bernthal reportedly in tow.