Our friends of simFlight Benelux enlightened a (German) poll about the Microsoft intentions to integrate a MarketPlace in the next MS Fligfht. This means all Flight add-ons would be found directly in-game but hosted/marketed by Microsoft themselves as well, raising simmers and expansions developers / publishers interrogations.
Only 110 visitors have voted at the time I’m writing, so use google translator if necessary, but please add your vote on the Flight! – German – magazine website. Their magazin issues are for sale here.