While it's not unusual to have leaks at low mileage due to grit getting into the seals, that does seem pretty early for a leak. Unless you got into some bad mud or something off road, I'd say most likely a manufacturing issue. Go see the dealer for warranty. While their at it, have them slip some neoprene fork protectors on to reduce the chances of future problems.
2009 BMW F800GS, 2008 BMW K1200GT