I've found various sources claiming that Starbucks serves coffee at temperatures ranging from ~140 degrees F to ~190 degrees F. Most of these sources claim that their temperature is 'industry-standard'. I haven't been able to find an origin for any of these claims beyond the Specialty Coffee Association of America [0], who claim a standard 'cupping temperature' of 200+-2 degrees F.
Can anyone provide a reliable source for whether or not there is a standard temperature for coffee (and what that temperature is, if it exists)? Obviously, a certain degree of variance is expected based on the time between brewing and serving - if the variance really is ~50 degrees F, I don't see anything wrong with that answer if it's sourced.
[0] http://www.scaa.org/?page=resources&d=cupping-standards