We sent v17 keys last week to everyone who ordered an upgrade or new copy since November 10, 2013. If you didn't get your key (a few emails bounced, and some undoubtedly disappeared into spam folders), email
support@jpsoft.com with your details.
Not everybody who has a v16 license gets a free upgrade to v17 -- a lot of people bought v15 and got a free upgrade to v16, but their year of free upgrades expired before v17 was released.