The blog post is lengthy so here are some useful snippets:

"Before today, there were approximately two million people on the waitlist to try WARP … For people just signing up today, the basic WARP service is free without bandwidth caps or limitations. The unlimited version of WARP Plus is available for a monthly subscription fee" ($ 4.99/month)

"From a technical perspective, WARP is a VPN. But it is designed for a very different audience than a traditional VPN. WARP is not designed to allow you to access geo-restricted content when you’re traveling. It will not hide your IP address from the websites you visit. If you’re looking for that kind of high-security protection then a traditional VPN or a service like Tor are likely better choices for you."