Ktmtwins has microfische (so do several other sites), though not sure if that is truly official.
The airbox lower, and filter frame is new part number for both '14 models (R & S) both list same filter as '13 models. The new part number is common for both S and R.
My guess is there was some sloppy change management on KTM's side and perhaps some early build '14 models have the '13 airbox, like it was a running change implemented when it was ready but after '14 builds started. Either way they kept the same filter for both revisions of airbox. The change was probably to better seal the existing filter, so it could affect aftermarket filter fit(i.e. if the sealing lip on BMC filter was thicker and fit '13 boxes well, maybe it is too tight for '14, or something like that). Hopefully it will get straightened out soon.
'14 KTM 1190-R