The CF will come. It's simply being saved for the later (possibly last few) variants. Long-time Lotus fans (i.,e. you've followed the company since the Esprit/Elise) know this. For as much as we all like to gripe about Lotus and all the things they don't do, they are in fact one of the most predictable companies when it comes to product rollout.
As a recap, you start with a base car (usually in a "first edition" style roll-out), you then follow it up with new colors and silly wheel options every year along with a multitude of "limited run" special editions, but powertrains remain largely the same. Then at or near the end you start getting the hard core CF body paneled, mild horse bumped versions with after-market quality adjustable suspensions, titanium exhausts, etc.
Examples: Elise Sport (Yellow w/ Silver stripes), Exige S 260 Sport (CF galore and still highly prized if not wrecked), Exige 350 Sport, Exige 410 Sport, Exige 430 Sport, Evora GT (CF heavy), Evora 410 Sport, Evora GT430 (CF heavy), etc. Also, all of these had Ohlin/Nitron style/quality adjustable suspensions, lighter wheels, etc.
Longwinded way of saying the CF will come and you will like it. You just have to wait (or just buy the tons of Chinese made stuff available now!).