TechRepublic has compiled a great chart that shows how well Blu-ray is doing against HD-DVD format. From the numbers on the this chart it looks like Blu-ray format is winning.
Here is an excerpt from the article that goes along with this chart: "The expected next-generation DVD format war isn't quite the deadlock many expected. ... Target's announcement Thursday that it would sell a Sony Blu-ray player in its stores alongside Blu-ray discs in a special feature promotion is important because the second-largest retailer in the U.S. doesn't sell HD DVD players in its stores, outside of the external HD DVD drive made for Microsoft's Xbox 360. It does sell a Toshiba HD DVD player on its Web site, however. "