Mac Developer Program & free copies of OS X The Mac Developer program is advertised as including access to Pre-Release Software (which right now means betas of Mavericks). Once Mavericks is released, will everyone with a Mac Developer account get a free copy/upgrade to the released version (including all future Mavericks updates)? Or will it be necessary for developers to also purchase Mavericks itself to be able to use the normal version?
Since Lion, the developer program issues its beta seeds of the OS using the Mac App Store.  You get a code in the developer portal which is redeemed in the Mac App Store. You can redeem this code on any Apple ID. It does NOT need to be the Apple ID that you  signed up with on the dev portal.  Once the final release is out, the beta seed in your App Store is transformed into the fully released version.

So yes, you do get it. And in fact, you will be unable to purchase it on the Apple ID with which you redeemed the seed.