The superstore chain has decided to back the Blu-ray format, and going forward will only put Blu-ray players onto their shelves. This, coupled with recent rumors of Toshiba getting cold feet and big-name players like Warner ditching the format as well, it is becoming clear that it is over for HD DVD. Wal-Mart has a reputation, ill or otherwise, for making a lot of things available very cheap – and if they do that with Blu-ray media and players, there's really no stopping the influx of sales it will bring.
Ultimately, a single format is probably better for consumers, depending on how fair the companies behind it are. If Toshiba has a trump card, they should bring it out now. Then again, it is probably far too late for the doomed format now.