I've just upgraded my Sonar X1 LE to X3.. installed with Melodyne.
 
I didn't start it..
 
Is this a packaging mistake ?

Melodyne Essential is included in X3 Studio and X3 Producer.
 
It's not a mistake it's a blessing :)

Did you get a license key for it? Otherwise it's just a demo.

aha.. I don't have a license key for Melodyne.. must be a demo.
 
I've registered / upgraded my X1 LE to X3 (49/=).. so it's not Studio or Producer.
 
Running X3b now ...minus the ProChannel
- but with full Engineering and Boutique Suite, pickup from my previous X1 / X2 Pro.
Edit : minus a few that is specific to X3 Studio / Pro release.
 
- DIY channel strip
http://www.musicradar.com/tuition/tech/10-classic-channel-strip-plug-ins-543123/1
 
With my previous Nomad factory purchase, I have SC-226 channel strip!

MachineClaw
Melodyne Essential is included in X3 Studio and X3 Producer.
 
It's not a mistake it's a blessing :)

+1000!!!

It's not in X3 base though which is what the OP was talking about.

I think X3 includes Melodyne Essential as a demo, while Studio and Producer include a license.