The amount of information about Food Network HD versions of their shows is zero.
I did a web search, and the only results were about a guy would does the color processing on the HD versions and what equipment he uses.
There is a strong trend in the TV industry that your web site must cover the subject of your channel, not your TV shows.
For example, all the sports TV channels web sites are filled with the same sports news from news web sites, and there is a tiny link in the corner to information about the TV shows (which is always out of date).
Food Network is the same - the web site is generally about recipes, etc.