A basic 'newbie' question

[Keith Powell]

I tried Fedora5 some time ago, soon after it first came out. But 
didn't stick with it long enough to get to know it! I'd like to try 
Fedora again, but I see that version6 will be out in October.

Will Fedora6 be just 'Fedora5 with all the upgrades', or will there be 
fundamental differencies? I'm wondering whether to buy the version5 
DVD now, or wait a couple of months and get the version6 DVD.

I've looked in the archives and on the web site, but can't find the 
answer.

Many thanks for any advice.

Keith