The moves, announced earlier today at a Lucasarts staff meeting, do not impact the company's development teams, or other aspects of its publishing business outside of the top brass.
I'll believe that when I see it. Traditionally a LucasArts president leaving coincides with a massive shift in their business plan, and a lot of cancellations and "staff reorganization".
Should we be afraid for Monkey Island 2: Special Edition? I wouldn't have thought so as that's pretty much in the can, doesn't cost anything in shipping materials and the first did really well. Other Special Editions though or re-releases we'll have to wait and see.
While the reasons for his departure are not known, like whether it was his choice or not, we can speculate. Since The Force Unleashed in 2008 LucasArts have not had a really killer game despite several in production, and have instead focused on "smaller" titles. Were the top brass at LucasArts annoyed at this? I bet they were. This is a real shame though, as those "smaller" titles included such things as an excellent new Monkey Island, long-wanted re-releases of old games, a new original game, and Special Editions of two games that have been crying out for SEs for years.
More as we get it. Despite messing up with Indiana Jones at the start, we'll miss you Darrell.
UPDATE 1: Apparently Darrell resigned, although there's not yet a reason why. Lucasfilm board member Jerry Bowerman (who has been high up at both EA and Sierra) will sit in the Emperor's chair until Grand Admiral Thrawn arrives to take over.