It is probably not the best time to buy an 800. They have been on the market 4-6 years now. depending on model and are getting a bit long of tooth. The market has caught up, and some say pass the 800...Triumph is doing that nicely.
One could expect some major changes in the 14 model year. Note Husquvarna has a 900 cc engine for example.
To be safe I would recommend waiting till atleast the 2015 model year.