Users of Coherence Pro 2, Unite 3, Unite 4, or Aerate can get a discounted rate when they upgrade to Coherence X. Licenses that were won or acquired for free via a promotion are not eligible.
You can try Coherence X for free here. Once you're ready to upgrade, fill out the form. We will do our best to answer your request within 72 hours, but we're usually much quicker than that.