So on the computer as Oscorp we see they have access to Ravencroft.
I'm guessing Electros captured after Time Square and taken to Ravencroft where Oscorp will get a hold of him and give him the suit that allows him to transform into pure energy.
Rhino seems to have no connection to Oscorp however since the Mech suit has Russian markings. Perhaps like Electro, he'll be taken from Ravencroft by Oscorp and experimented on causing a full on mutant Rhino.
I also suspect Harry will be the Flying Goblin that is most known and after unsuspectedly being defeated by Spiderman, Norman will become the full on roid rage Hulk Ultimate Goblin that shoots fire from his hands in the sequel. I don't think they'll do a Glider version twice.
On top of that, you have the Venom file on the computer and the fact that Richard was working on something so secret they tryed to kill him, likely the alien symbiote that they already have.
Plus we see Ock and Vulture's stuff, a referance to Australia on the Oscorp computer that could be a referance to Kraven, a referance to Dr. Morbius and whoever the guy in the trench/hat is from the end of 1 and lab in the trailer. They sure are setting up a ton of bad guys.
Which is both cool, and scary. Too many villains is what ruined SM3.