It may be worth reading through the news on the main page as there has been quite lot of news about potential launch dates for both Blu-ray and HD DVD.
Toshiba has recently delayed their launch of HD DVD players. While they don't have a confirmed launch date, Warner brothers expects to start shipping HD DVD movies on April 18th, so chances are that the launch will be around this time, particularly since Warner brothers have been one of the first major studios to announce HD DVD movies. Toshiba will have two players - an entry level one at US$499 and a more advanced player at US$799. See this news article for some further info. So far, no other manufacturers have any HD DVD drives ready for launch and LG has only recently announced that they will begin making HD DVD players.
The Blu-ray format has been delayed several times already due to AACS copy protection support issues. Sony expects to begin shipping movies on Blu-ray from May 23, which is also the predicated time for the launch of Blu-ray disc players. Unfortunately, Blu-ray players will start off very expensive with the cheapest models starting at around $1,000!
So far, there is little clear news going about the launch of Blu-ray or HD DVD PC drives. However, pricing has already been announced for TDK's Blu-ray media, which is expected to be â‚¬15, â‚¬20, â‚¬35 and â‚¬45 for 25GB BD-R, 25GB BD-RE, 50GB BD-R and 50GB BD-RE media respectively. TDK's media is expected to hit the shops in April, so there is a good chance that we can expect to see Blu-ray writers becoming available around then. HD DVD writers and media is also expected to launch around April, particularly since Toshiba has announced a laptop with an internal HD DVD drive, which is predicted to launch around April. So far, I haven't come across any confirmed retail pricing for PC Blu-ray or HD DVD drives or HD DVD media.