OSnews explains why wiring a house still makes sense in the 21st century c.e.: A very well-reasoned article from OSnews explains why the site still backs residential wiring. They're involved in the build-out of a Utah home partly as a technology demonstration, and they've put coax and Cat 5E Ethernet cable throughout, as well as conduits for future wire pulls. Fundamentally, wire has more capacity; I'd argue it does across several dimensions, too. You can run 1 Gbps raw across a Cat 5E or 6 Ethernet cable in both directions at the same time versus best performance of unidirectional nearly 100 Mbps in my testing of Draft N. But you also get switching with Ethernet--multiple simultaneous symmetrical 1 Gbps--and if you need more capacity you simply pull more wires and put in more switches. Wire is cheap and switches are now, too. It's a good read if you're thinking of rewiring (or unwiring) your home.
Cablevision's already started its rollout: An observant tri-stater at the Cable Rant site spotted Cablevision installers putting up BelAir gear on their cable line. He took some photos.