That's a good news indead.
I've some concerns too, about the inclusion of EE 1.0 in the update. I hope it'll be an SDK update and not just an EE 2.0 one.
Keep up the good news.
I would assume it would be the latest 3.2.2 as there would be little point in integrating an older version? I think the roadmap is just out of date.
I would also assume that this would be an SDK update and not specific to EE 2.0 as this integration would affect many areas of the SDK. EE 2.0 is just a tool, it isn't the actual engine itself.
PhysX 3 probably will be included in 1.0 as well, but not as quickly (first I need to thoroughly test it, and finish its implementation and few new API's, so probably it will be included first in 2.0 since it's also an Alpha and can have not yet fully tested/implemented physics).
PhysX 3 will work on Win Mac and Android, I have contacted Nvidia for iOS SDK but haven't received yet any reply so will wait more.