This one is still only in the very earliest stages, but it looks like MobiTV has taken advantage of the big National Association of Broadcasters Show in Vegas this week to show off a new mobile DTV service that it's developed in partnership with Sinclair and PBS, which it hopes will eventually find its way to a few interested cellular carriers. The service itself is a combination of free over-the-air DTV broadcasts (from PBS and the CW, at the moment) and subscription-based on-demand content, which would apparently be made available for a seven-day window and be delivered via mobile WiMAX. Unfortunately, there's no indication whatsoever of a potential roll-out, but it looks like MobiTV will be working hard during the next few day
