Copied from Blizzard Entertainment and modified for Disney:
Soon: Copyright 1971-2010 Walt Disney Company. All rights reserved. "Soon" does not imply any particular date, time, decade, century, or millennia in the past, present, and certainly not the future. "Soon" shall make no contract or warranty between Walt Disney Company and the end user. "Soon" will arrive some day, Disney does guarantee that "soon" will be here before the end of time. Maybe. Do not make plans based on "soon" as Disney will not be liable for any misuse, use, or even casual glancing at "soon."
From someone "in the know", supposedly 3 years. The "2nd ride" in FLE that everyone is talking about will be announced soon (I didn't get a timeline, but I wouldn't be surprised if is in the next month or so)