Shanghai and Avatar will be covered in the WDI Pavilion that opens on Friday morning. They already covered Disney Springs, with cool models and info, at D23 Expo in 2013, so I don't expect them to go over that again.
The Parks & Resorts keynote presentation is Saturday afternoon. Since Shanghai and Avatar will be checked off since Friday morning, the "news" they'll be discussing will be aimed elsewhere. In my amateur opinion, I wouldn't be at all surprised to hear about two or three things from this list:
Disney's Hollywood Studios - a broadly worded announcement of a massive DCA-style remake, light on specifics still but heavy on excitement and one of those vague aerial sketches showing the completed park through misty clouds
Disney California Adventure - Marvel Land coming behind Tower of Terror, with an indoor coaster E Ticket (per Miceage rumors)
Epcot - Some more fleshed out information about Frozen Boat Ride in Norway, maybe a short video clip and ride details?
Disneyland - An announcement of what's going into the old Innoventions building