I keep wondering what Zero is planning in the way of styling for future years.

It must be difficult for them to predict future trends as they don't have the resources to switch from one basic style to another very quickly (if at all). There has been a lot of discussion about Zero needing an aerodynamic fairing to improve range and reduce power consumption at high speeds, but I just don't see it happening unless you see them first testing it on a racetrack - which hasn't happened yet.
The only manufacturers who really gave that a try in the recent past were BMW with their 1989 K1, which sold poorly as it was heavy, looked funny and was kind of impractical for the needs of their traditional clientele and Suzuki, with their Hayabusa. BMW never gave the aero design another try after that. While Suzuki's Hayabusa has several aero touches, that bike sold because most customers held their styling noses and bought the bike because of its top speed and power. Even then, it has never a relatively big seller for Suzuki.
No production manufacturer has even tried to market a "dustbin" design since the racing bikes of the 1950's (which were considered dangerous at the time due to crosswind instability) and even the sales of sportbikes with racing fairings are fading fast in the market. Right now I don't see aero-styling something that the market is going to want in enough quantities to interest Zero, considering the investment needed to create such product and the small number of potential sales.
Now the latest hot styling trend is the "scrambler". A style that Zero could embrace with some minor modifications to, and sprucing-up of, the DSR - if only their could figure out how to deal with the lack of needing a high-mounted (or any) exhaust system to give it that "scrambler" look.
From the point of increasing their sales, which I believe is Zero's primary goal, I think they should embrace the "scrambler" styling (or, if nothing else, at least the name - which is something the public can understand, instead of "DSR").
What got me started with this line of thought is this blog by
Bike Bandit regarding the scrambler styling trend:
http://www.bikebandit.com/blog/post/what-makes-a-scrambler-a-scramblerAs a historical comment: I saw my first "production" Scrambler motorcycle in a 1959 Sears Roebuck catalog. It was a 250 cc two-stroke "twingle" (two pistons in one cylinder), manufactured by Puch in Germany and sold under the Allstate brand by Sears. See attached photo. BTW, that $700 price was pretty expensive for a 250 at that time, which is probably why it didn't stay in the catalog for very long. I think that was the only year it was offered for sale by Sears.