An email sent to those signing up for the offer suggests the program will provide details on multiple products in the future. It is also not clear how or if these products will be made available to the general public.
That said, the announcement of the program today on Twitter was accompanied by a photograph of the Titleist 915D4 driver. The club debuted on tour in March but has not been introduced to the retail market. A line extension of the 915 driver family, the D4 moves its sole weight closer to the face for a lower more forward center of gravity to further reduce spin. The 450cc head features more curve in the crown for a rounder overall appearance. It has a similar face height as the 915D3, and also employs the 915's platform technologies of a sole channel for enhancing face rebound and 16-way loft and lie adjustability.
Among the handful of players who have used the 915D4 are Justin Thomas, 19th in driving distance at 300.6 yards. Thomas also currently ranks 7th lowest in spin rate (2,281 rpm), about 12 percent below the tour average.
It is not clear whether the clubs will be exclusively available directly through Titleist's website. The company does have a long tradition of custom fitting through its network of retailers and club professionals. It also isn't clear if these clubs will be available in a limited capacity prior to being released wide scale. The 915 line did not appear at retail until late fall, but drivers were in player's bags as early as June.