Well at this point we dont know much, some early talk does suggest that few features from their past research work might see the light of the day namely 3d touch and imaging tech.Nokia isn't the one making these phones FIH a chinese subsidairy of Foxconn has purchased the licensing in order to make the Nokia brand phones. It will just be the name, not Nokia's actual own work.
Lipstick on a pig. It'll still be Android.