I've seen a lot of Windows Phone 7 promotion, but it's not all that compelling. Their entry into the smart phone wars was so late that they needed something extraordinary to convince people to consider them seriously. Instead they made something marginally better than iOS and Android in some ways and marginally worse in others.
I suspect they're waiting for Windows 8 before making a big push. A unified desktop/tablet/phone platform is probably a lot more interesting, promotion-wise, than yet another smartphone.
