According to the Recruitment Pilot who was one of the two presenters, a Captain Robert Scaddan, there will be no outside basings. He made it sound like "ever."
I've heard from someone else that this is part of the entire "Do-Buy" strategy for expat employees, attract them over with fantastic stories, but also, get them to spend in Do-Buy what they earn. Having foreign basings means the money goes elsewhere. See you at City Centre.