I was chatting to my golf pro the other day and he was telling me how most of the big companies bring out their new line-ups each year and they stop making the old model and let the previous year's clubs just filter out into the shops until they run out. So it's always possible to pick up a discount but you have to get lucky.
However from this year Titleist are changing so that the 2012 line-up will still be manufactured until later in 2013 and sold at a lower price point than the new 2013 models. They reckon (and rightly so in my opinion) that lots of people would rather spend £150-200 on last year's Driver line used by Rory McIlroy, etc, rather than spend the same amount on the 2013 model of a 'lesser' brand. As much as the big companies would like us to believe that 2013 models are massively different to 2012 there probably isn't a great deal at all (other than the increased adjustability that everyone has started).
I think the new Titleist 913 Drivers are already in some shops so there are probably already discounts on the 910 models.
It will largely depend on your golf pro and what they want to do. Might be worth asking your local pro.