As you may be aware, core support for ColdFusion 10 will end on the 16th of May, 2017.
This post is to give you a heads-up that post 31st May 2017, the upgrade pricing to upgrade from ColdFusion 10 to ColdFusion (2016 release) will no longer be available. You must pay the full price to procure licenses for ColdFusion (2016 release) if you only have licenses for ColdFusion 10 or below, post 31st May 2017.
Please note that if you are already subscribed to a Maintenance and Support (M&S) Plan or an Upgrade Plan you already would have access to the latest version and will continue to have access to the latest version till you are subscribed, irrespective of the version of ColdFusion that you are running on production. For instance, you may still be on ColdFusion 10 in production, but are already under an M&S Plan. In this scenario, you have access to the latest version anyway and this has no direct relevance to you even after 31st May 2017.