Apple has to wait on Intel for new tech, but the good news is that Intel is on a technology roll, and is in a position to keep on top the (competition) game w/AMD. Thus, you will see more frequent releases from Intel this year, and also see Intel using the technique from Apple's (marketing) playbook -- spreading the release of several products over several weeks, rather than all at once to achieve a more long-lasting marketing buzz.
Intel has quietly shipped several new products this year, for example, they just release the low-power U7600 and U7500 cpus earlier this month and hardly anyone noticed. The "mystery" cpu in Apple TV is another example...
Expect virtually anything. At anytime.