Ultrabooks.
Intel graphics is rising heavily, and all Ultrabooks have dual core (4 thread) 17W Sandy Bridge CPUs with Intel HD3000 graphics. This explains both the Intel graphics and the dual core CPU increases. Intel (and laptop manufacturers) have been promoting Ultrabooks very heavily lately. Intel estimated that 40% of notebooks sold this year would be Ultrabooks... a really optimistic estimate, but seems to be at least partially true based on these Steam survey results.
Bought my wife Asus Zenbook (Ultrabook) some time ago. It has 1600x900 resolution 13.3" display, dual core Sandy Bridge (with HT), a 128 GB SSD drive and weights just over one kilogram. It actually beats my old trusty desktop in CPU benchmarks (both single threaded and multithreaded) and in productivity benchmarks (I have Core 2 Quad Q6600, 160 GB SSD, Radeon 5850) and the Ultrabook CPU consumes only 17 watts... Computers have evolved a lot in just a few years