I haven't missed an upgrade to Photoshop since version 3 came out. And I wouldn't consider an upgrade to Photoshop without upgrading my Photoshop Bible, too.
Deke McClelland has an extremely rare talent in the computer book world: he can write. I've picked up books on favorite programs, only to walk away wondering if the author had suffered any facial injuries when his head impacted the keyboard. He had to have fallen asleep writing it, because he sure put me out reading it.
Not Deke. Photoshop Bible is not only the best place to go to find out all about the new features of everyone's favorite pixel-pusher, it's a great read, too. If you're an experienced Photoshop user, you're sure to find nuggets you can incorporate into your workflow. If you're brand new to Photoshop in particular, or computer graphics in general, Photoshop Bible will give you usable information in easy to digest pieces. I've used Photoshop Bible to get up to speed on new features, and it's been my sole prep material for Adobe Certified Expert tests. I've recommended it to clients and students for years, and not once has anyone reproached me for the suggestion. Photoshop Bible 6 is no exception, and the Gold Edition has wonderful full color supplements that had appeared in a separate publication, demonstrating top techniques from industry-acknowledged Photoshop experts like Jeff Schewe, and Greg Vander Houwen.
And don't be surprised if you find yourself putting King, Grisham or Clancy aside one night, and picking up McClelland, just for the sheer joy of the experience.