Attacking Poland would be an attack on NATO, I highly doubt that will happen, the most likely target would be Ukriane, which, like Georgia is not a member of the alliance. Then again, Ukraine has a much more powerful military than the Georgians, especially air power, the Russians would have a very serious conventional struggle on their hands.
Ukraine has 11 million military age men to draft, Su-27 and Mig-29 fighters, and more. they are no pushover like Georgia.