According to job listings, Apple is looking for engineers with experience in LED backlighting and LCD displays that will come in “the next generation of Macintosh platforms.”
Also rumored, thanks to the job listing, is that future MacBooks may get IGZO, which means that future MacBooks could have better backlighting technology, and therefore better displays and laptops. For instance, Retina displays and laptops with much better battery life. It could also mean a Retina MacBook Air.
For now it’s all just speculation. It’s reasonable based on the job listings, but it’s still not definite.