I picked these up at my local hobby shop yesterday and they are all gorgeous! The Porsche GT3 has great details, and there is a depth to the finish on the 917 that just has to be seen in person to be fully appreciated. Similarly, the 330 carries a very dark and rich red that complements the body very nicely. These cars are very well done.
The chassis on the 330 is the older style, complete with external magnets, simulated suspension on the front axle, adjustable guide height screw, and enormous metal weight in front of the motor that also is what the case mounting screw attaches to.



Essentially, it's just as highly tunable as the old ones used to be. Take a look at Harry's old review of the 330 in the archives. You're getting the same thing. Personally, I never changed much on those and so the new chassis found on other current releases works just as good for me, but for those who've been missing these options, they're back here.
I know that I'm getting a great car from Carrera, so it was neat to see a little surprise in the case department. These were all sealed with tape that sports the Carrera logo!

I guess it's the little things like this that get me excited these days.
On the unimportant yet notable front, check out the cars advertised on the back of these cars' cases: (all three releases look like this)

All but the Gesipa 917K are no longer in production. That's a bit odd, but I guess they have some old stickers to use up!