I doubt it - most likely E* is making sure they are in the clear with VOOM. It would suck if they added more national HD channels with the space saved from removing voom... only to have a court order (very unlikely and I hope it doesn't happen as well) make E* turn on Voom again. As I bet they are maxed out on bandwidth and would then have to pull down the new HD channels?
When the VOOM satelite service was dying there were tons of threads discussing this or that rumor about it all. While there may not be all that many VOOM afficionados they have always been passionate and outspoken. I suspect that if DISH announced that one of their new HD channels uses cancer, AIDS, and lumbago there would still be VOOMers laliming that it was not in DD 5.1 like VM.
I will eventually run its course---hopefully by the return of all or some VOOM but it will take awhile---and six months later it will erupt again for some reason. It is like the end of the superstations threads (they have been described as dying because of SHVA,SHVISASHVERA, the formation of the WB, the formation of the CW and the digital transition)---and the stationsare still there and every so often so are the threadds predicting their demise.