These sound all like "Blue Sky" style rumors to me, and while I wouldn't buy any of these without a firmer source. However, I don't mean to Poo-poo rumors since they are fun, but I do like to perform a "reality check", so hear it goes:
1. World Showcase may change their opening time to 9 am
I only see this happening if they get some sort of crowd absorbing ride in WS. Until then, there's no motivation to staff this part of the park that early. The FW section is more than enough to absorb the crowds from 9 - 11 AM. Likelyhood: Low.
2. Imagination building maybe taken over by The Muppets (3d movie & a ride)
I could see this as an outside possibility. I think they are trying very hard to come up with a concept for this building that would be a hit. The Muppets are not selling well (the first movie fared so-so, the second worse), but it's a IP that could still work. IF they really were to go all in on Star Wars at DHS - this might be a perfect location for MuppetVision 3_D and a new ride.
Likelyhood - Moderate
3. Ratatouille ride put in France
There is legitimately space for a ride here. There is space both behind the area as well as between France and Morocco, so it could be done. Any ride in WS seems well down the priority list as it seems like everything in WS has to be funded by the country of origin...but at least the locale is realistic.
Likelyhood - Low
4. Alice in Wonderland ride put in the U.K.
There is absolutely no space in this area unless they take out the Millenium Village center, which is used for many private events. Alice has no sort of popularity right now, and is already represented with the feature attraction of the tea cups in MK as well as a dark ride in DLR. Too out of left field to be true.
Likelyhood - No Way Jose
5. Inside Out attraction and A Bugs life movie maybe put in the Wonders of Life building (I hope this one's true)
This one is tough. There certainly is something that could be done with this space, but "Inside Out" is several years away, and "Bug's Life" makes little sense to go with the Wonders Of Life concept. Disney doesn't build attractions based on movies that haven't come out yet - with ironically enough "It's tough to be a bug" being the ONLY exception in 60 years. This more sounds like someone's idea of "Hey wouldn't it be great if..."
Likelyhood - No Way Jose