The Orioles could win the World Series this year. They probably won't, because only one team can win the World Series each year and even teams who everyone agrees will be very good will end up losing at some point. The Orioles are not a team expected to be good, but then, they weren't expected to be good in 2012 when they surged to a wild card spot, nor in 2014 when they romped through the American League East, either.
A lot of things will have to go right for the Orioles to win the World Series, or even return to the postseason.