All clues point towards the proprietors of Harry's Bar being behind the Owl Tree redux and most importantly, the owls will be back! According to Eater's reader comments:

Wasn't the liquor license purchased by the folks from Harry's Bar on Fillmore? I've heard that they are trying to 'restore' the bar as best they can (many fixtures were sold off during a cash-strapped period shortly after Bobby's death), but the place needed new electrical, plumbing, etc. Anticipated re-opening was March, so we should expect sometime in June...

Although Bobby is sorely missed, we're glad this establishment will be back in all of its owl glory.

Photo from EaterSF.