Interesting. So it would seem that - potentially - completed work at Epcot leading up to WDW's 50th could be:
- Gondola station and expanded/reconfigured International Gateway
- E-Ticket Ratatouille trackless ride
- C/D-Ticket ride for the UK Pavilion
- Redesigned entrance and spine down to the entrance to World Showcase
- Rethemed restaurant in place of Electric Umbrella
- Rethemed store in place of Mouse Gear
- Refurbished and repurposed Innoventions areas East and West (repurposed to mean more than just empty, unused, useless space)
- Refurbished Living with the Land
- Refurbished film in The Land Pavilion
- Refurbished Mission:Space (currently underway)
- New or Refurbished nighttime fireworks show
Not complete by any means but this is what I came up with off the top of my head at work. It seems that the Energy Pavilion replacement has fallen back a bit and could definitely miss completion by the 50th anniversary. I also know that at one time a new country pavilion was mentioned as well as possibly one additional ride in World Showcase, but this has gone very quiet as of late.