While some golf companies go the route of bombarding the customer with release after release, Titleist takes the opposite approach and sticks to a two year product cycle with woods and irons alternating years. While that means that there is often a product from a competitor with more current technology, it gives Titleist the opportunity to do its due diligence and figure out what technologies work, which don't and then bring debut a lineup that will hold its own for a couple years. It wasn't until the 910 line of clubs that Titleist added an adjustable hosel, which was quite a while after competitors such as TaylorMade and Callaway had done so; however, Titleist took the time to do it right and the hosel they created is regarded by many to be the best of the bunch; an opinion which is further supported by the fact that four years later the company is still using the same one and is no essentially being used by Callaway (just a minor tweak to their version).
With the 915 woods, Titleist has its most featured packed set of clubs. While most of the technologies are ones that we've seen in one version or another from the company's competitors, you can be sure that the company has done it the right way.