Yes, PFS will be at Origins. I dunno if Paizo the game company will be there, but the Ohio PFS crew runs a good show every year.
They are looking for GMs if you are interested. Running games can earn free entry badges and room space!
No, no event information is available yet, beyond that there will be three slots a day except for Wed and Sun, and I think the slots start at 8 am, 1:30 pm, and 7 pm.
-j