Now, they didn't say it wasn't TIE Fighter, either. But it's a pretty safe bet this Tweet from LucasArts cools off talk that a reboot of the venerable space combat sim will be announced soon.
Got a back-catalog announcement on Monday. It's not X-Wing! I'm heading THAT rumor off at the pass!
And, I mean, that's all there is to it. You can grab a list of what back-catalog titles have already been announced here, and then begin your speculationing.
Not X-Wing LucasArts Retro Announcement Monday [Blue's News]