Samsung have always supported multiple OSs. Some of which its developed itself.. so there's nothing new there. They just don't like to be tied to a single one. So i think the link that you've posted is by people who clearly don't understand anything about the company.
Windows mobile, windows phone, Bada, symbian, android, brew and linux have all existed on samsung devices at the same time.. if Apple had offered them IOS i'm sure we'd have seen that as well.
So 2013 will still see plenty of samsung android (as will 2014, 15 etc...)