A die shrinkage isn't all that's coming to broadwell, some minor video improvements have been confirmed for the chip. Which adds VP8 hardware decoding, as well as two independent stream decoders to boost video decoding performance and speed. The TDP can be as little as 3.5W and as high as 4.5 Watts.
This is great news for apple! despite only being dual core processors, these pack a powerful punch, allowing apple to create a smaller MacBook without compromising size, battery life or performance. In fact some rumors clam that it'll be even thinner then the current MacBook Air! Stunning!
Let me know if you're as excited as I am about what apple has in store for us in the upcoming months!