Well I am not giving away secrets that HOFF does have a role in the show... It's listed on IMDB.com

And I'm not giving away secrets that KITT is a Shelby GT 500 because that is also listed on jalopnik.com

So that's pretty much all I can say since that information is already on the internet...

So, yes... you will see Knight Rider as a movie of the week on NBC in the spring and it may become a TV series again...