Well, I was in my local camera store, Central Camera, picking up my black and white prints (yes, Kodak still makes Tri-X!), and had to ask about the new Nikon D300. The fellow behind the counter told me that they get maybe 10 in with each shipment, but they have folks waiting for them. They list them for around $1,794.95. He told me that the D200 has come down to around $1,399.95 now. That's pretty good for a camera that started out at $1,700! 
So that got me to thinking: is the D300 worth $400 more than the D200? Some of the improvements seemed like they might be 'nice to haves' and not 'need to haves.' I searched for a D200 vs D300 review, and Scott Kelby did a nice hands-on job here. I bought his book on Adobe Photoshop Lightroom (I've got a link below for Amazon.com if you'd like to check it out) and found the guy seems to know what he's talking about! I like his comparison of the two cameras, because he actually bought the D300, and was able to compare it to the D200 he also owns (not just compare the specifications that anyone can dig up).
Well, to cut to the chase, he says on his blog "the D300 is a much better, more fully featured update to the D200 than I had ever imagined it would be. How much so? Well, needless to say, I’m selling my D200." And later he says "To me, the D300 doesn’t feel like an upgrade; it feels like a whole new camera from the ground up. The improvements are that significant."
Read the whole article, it's very informative. I've decided it is worth the extra money for the D300. Now I just have to find out where to get this money! I know it seems trivial, but that huge screen (at least compared to my D70) really has me hooked. Scott was also impressed with the utility of the Live View (like adjusting White Balance and seeing the effect in real time). Anyone else out there have any hands-on comparisons for us? If you're fortunate enough to have the money, you can get the camera here from B&H. I've bought camera (and other electronics) both off of their website, and at their retail store in Manhattan, and have always had a good experience.
Update 3/14/08
Phil Askey has just posted his thorough review of the Nikon D300, and said the hardest part of the review was trying to come up with the 'cons' for the camera. See his review here.
Update 3/17/08
Ben Long at Macworld has also posted a glowing review of this camera here. His biggest complaint was that "Nikon’s menuing system is cumbersome and not easy to navigate." But in the end he says "the D300 is a great DSLR" with "excellent image quality, high ISO performance, robust feature set, and sturdy build."
Update 4/5/08
Ken Rockwell has a nice review of the D300 here. He calls it the "world's best amateur camera!"
