Unless Yamaha has some Steve Jobs-esque “one more thing” trick up its sleeve for its 2013 sport bike line, fans of the tuning fork brand should prepare themselves for a color and graphics package-only update to the 2013 Yamaha YZF-R1 & 2013 Yamaha YZF-R6.

Simply stating that the “2013 YZF-R1 and YZF-R6 come back in a variety of new and exciting colors,” Yamaha’s press release is void of any mentioning of an update to the R1 or R6’s electronics package or other technical add-ons, let alone any revision to the major components of the machines.

With Honda already showing us its re-styled Honda CBR1000RR for 2012, and Kawasaki and Suzuki expected to stay the course with their liter-bike models, it would seem the only guaranteed change in sport bike offerings from the Big 4 for 2013 is the revamped Kawasaki Ninja ZX-6R, which sees the same chassis outfitted with a 636cc motor and new bodywork. Humpf.

What is perhaps more interesting is that there appears to be no movement from Yamaha or Suzuki in bringing a 250cc class sport bike to the American market — thus leaving all the quarter-liter fun to Honda and Kawasaki. Photos of the 2013 Yamaha YZF-R1 are after the jump.