If it's bought by Belhaven as someone told me then expect it's selection of real ales to be swiftly replaced by Abbot Ale, Greene King IPA and other beers from the limited Greene King (Belhaven's owners) portfolio. It's a tactic they've been using in England for some time and they've done it in other pubs in Aberdeen (Ma's pretty much only stocks Greene King ales and Belhaven Best now):
AF&RM CAMRA - The Campaign for Real Ale - Green King - The Villains?