I appreciate the clarification; had the announcement contained something to that effect ("We realize that production releases need GPG signatures and secure distribution channels, but we want to get this build out for early testing by devs and we're still ironing out the aforementioned distribution procedures"), I'd not have had any complaint at all.
Unfortunately, without that notice, my first thought was "why is it linking me to an HTTP site". The notice prevents visitors like me from guessing as to why that is by setting the appropriate context and letting us know you're aware of the right steps but they aren't feasible right now.