An updated version of iTunes 7 has been released that includes some bugs fixed. Some will probably more luckier than others when it comes down to your particular problem. I can say that the updated version has fixed the problem I was having (on Mac OS 10.4.7, iTunes crashing when it goes to the iPod details page when you connect an iPod).
What you will not find are cosmetic changes. For anyone who was hoping some graphics would be changed in an updated version, sorry. From what I can see, literally no graphics were changed from the initial iTunes 7 launch.
If you are using iTunes 7, and are experiencing problems, I would suggest you get this update.
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