I know the feeling... after my 09 I bought a ... 13. If I sell my 13 I would buy another C14. Meanwhile I am looking forward to the MY18, as I believe it will be a new massive re-design. Keep in mind that the 1400GTR is no longer available in Europe... something tell me a new one is in the pipeline.
None of us mere mortals can really know, but I agree that the '17 is almost certainly the last Gen2 C14. It is a nice, even, 10-year run of the C14 and the competition has put lots of pressure on things like cruise, suspension, headlights, etc. But it shows just how far advanced the C14 design was to last this long and STILL be at or very near the top of the concept.
What's up next? Gen3? Or something totally new? Or will they drop the concept completely? The latter seems unthinkable, considering how long the C10 and C14 have been around. I am not sure why the '17 is showing in the USA and CA but not EU.