Obvioulsly you are new to the m/c world.
Basically there are continual changes by most of the makers. True in some cases no MAJOR changes for a year or two, but often they are forced into coming out with a competitive looking to sometimes better handeling & more powerful bike.
I am with Chris in the fact that there is NO small trunk space & besides to come on with a better all around full system it is going to be COSTLY as all is tucked away so much & those producing them are going to be rare at the start & costly. Latter means nothing to me as I leave my exhaust systems stock on my sportbikes.