I'm going to say not likely. The recent statistics have shown that the average age of the motorcycle owner is getting older, something north of 40 IIRC. Newcomers to the sport are declining as a percentage from previous years, and the sportbike market has suffered one of the largest contractions of all motorcycle segments. 600cc sportbikes were all the rage only a few short years ago, and that market has fallen flat on its face. The MV Agusta F3 and Triumph 675R are getting all the attention, but that is press attention and if you look at the actual sales numbers of the category, they are seriously down as the weakened worldwide economy makes those bikes non-affordable.
Liter-size sportbikes are right behind, but buoyed by the older gents (like myself at 42) that can afford them and the insurance that comes with them. However, somewhere around this age, the majority start looking for something more comfortable and dare-I-say-it, something easier to live with.
Based on the above, I think that analysts are predicting that sportbikes are going to continue to decline in sales, so less money will be spent on their development and less updates per longer life-cycle will mean the HP war will slow down. I believe we could be at the zenith of sportbike capabilities. The shift will be towards more capable sport-tourers like the Multistrada, which Ducati made great pains to race and win at Pikes Peak to keep the motorsports heritage a strong part of the marketing mix.
For Ducati, the Monster and Multistrada lines are the largest and fastest growing, respectively. The Superbike family is still 21% of total sales, but I predict the streetbike/adventure segments will become increasingly more important from a sales standpoint (Monster, Diavel, Multistrada). The 1199 will receive periodic updates and refinements, probably focusing on semi- and fully active- Skyhook-type suspension. Power will increase slightly through the typical year-over-year engine refinements, but no more than 10% over the model life.
I believe it will also be determined by what BMW does with the S1000RR sportbike line. I predict BMW will focus on enhancing their chassis via handling improvements (Skyhook will become standard just like TC/ABS is now) and considerable weight reduction. Their motor already produces a perfect HP/Torque curve and meets all future emission standards, so there is really no incentive to increase output.
All those factors add up to about 200 HP at the crank being the maximum for at least the next five years.
Personally, I'm always going to have at least one ultra-focused sportbike for track/mountain duty in my garage, but I must say I was shocked at how much I enjoyed the Diavel test ride at Daytona Bike Week a couple months ago.