The latest issue of PCGamer in the UK had a WotlK preview article, most of the stuff here was already known but there was also a small Q&A with Tom Chilton (Kalgan) and a very interesting question answered. Thanks to Matt for the info.
Quote from: Kalgan
PC Gamer: What else is changing?
Tom Chilton (Kalgan) : We’re also going to be doing away with spell-damage only type gear. We’ll be moving to a system that, as part of your talents, will let players convert healing into spell-damage and vice-versa as part of their talents. That way they can use the exact same gear, but their talents just adapt what it does.”
http://www.mmo-champion.com/index.php?topic=8595.0(amazing they give such scoops to lame magazines like PC Gamer)