We have officially released DNSSEC Support. You can utilize this by sending traffic to our Anycast IPs, ending in .9 (22.214.171.124 and 126.96.36.199)
As Mike Schroll noted in a post on this thread, there are a couple challenges with DNSSEC support:
1. Low internet adoption - A large amount of domains on the internet do not have DNSSEC validation setup on their end.
2. DNSSEC outages - Many domains which support DNSSEC have experienced outages of several days or weeks.
Because of this, we encourage people to use this feature only if they understand the inherent risks.