If you've purchased Kerbal Space Program before May 2013, you may be an Early Adopter. This means you're eligible for all of the upcoming expansions. The original post can be found in the Kerbal Space Program forum.
For us to confirm your eligibility, please provide any or all of the following:
- The game key you received
- The receipt when you purchased the game
- Your KSP store login email or your Steam username
For our assistance, please submit a ticket under the Kerbal Space Program form with the subject line "Early Adopter".