I signed up. I'm sure it will be at least another year before anyone actually has the service but I do like to be in the loop!
U.S Customers only, at this point.
Meanwhile, FCC Chairman Ajit Pai doesn't like it.
FCC has “serious doubts” that SpaceX can deliver latencies under 100ms
SpaceX can apply in low-latency tier, but FCC says it faces “substantial challenge.”
I won't bother further quoting because Pai is a lying political piece-o-shit. Suffice to say, I've seen no technical argument that suggests Starlink's average latency will be anywhere near that high. ~20ms is probably closer to the truth.
but hey, if you care about a rebuttal to Pai's ridiculous claim, a commenter on Ars makes a fairly succinct one.