Thanks for checking on this stuff, Darrell. I disagree with the "improves" idea though. Since ESPN is sending it's signal at 720p @ 60fps, I think these sets should be able to show off what they're designed to do. At 1080i @ 60 fields/sec, Voom is scaling and interlacing the feed.
Voom may be using "line doublers" or some such for scaling, but that's not adding new material, it's just creating additional lines from existing material. And with the move from 60 frames to 60 fields per second, there is a loss of data. So even if your 720p TV or projector de-interlaces the the signal, you have lost quite a bit from ESPN's camera to your TV.
I'm not arguing 1080i vs. 720p. What I'm arguing is that 720p material on a 720p fixed display is superior to 720p material scaled and interlaced to 1080i then rescaled and de-interlaced on those 720p displays. I know this is not unique to Voom. I think both D* and E* both do the same thing, but I couldn't tell you specifically when or where.