which tie fighter are you talking about? the one in the list of upcoming 2005 legos? on the bottom it say Star Wars Original Edition , thats the only one that says it so i think it is a re-release of the classic star wars legos instead of something in the new film, who knows maybe we might see a glimpse of it at the very end. i would also say during the middle and end of the year you will probably see a ton of other OT and Prequel stuff released, considering this is the last Star Wars film being made they are going to want to get as much stuff on the market as possible. as for the folding wings on the jedi star fighter, if you look at the lego version it shows the R2 unit in front of the wings, so the wings should be able to close.
edit: i just noticed on the Lego tie fighter if you push down on vaders head the light saber lights up, cool.