I got my email from COTA:

Thanks for your support and attending the 2014 MotoGP race. I’m reaching out because I want to make sure that you are one aware that 2015 MotoGP tickets are on sale and that I would like to help you in your buying process in anyway. The pricing is the exact same as last year with some small improvements. The Paddock Pass to behind the garages is available again this year for $200. We have also upgraded our VIP Paddock ticket as well as it will be a much more desirable experience.