The service interval on the 2.3 and 1200 Tiger/Trophy engines has always been 16,000km. Other engines it was 10,000km. When the water cooled twins were released in 2016 ie all the new Bonneville range, including the Street Twin/Scrambler and Thruxton models, they also have 16,000km service interval. So does the 2.5 Rocket.
Other engines in the Street/Speed Triples and Tiger 800/900/1050 retain the 10,000km service interval.
Regardless of miles, I drop the oil and change filter yearly and no more than 8,000km, frequently check everything and regularly plug in to the Dealer computer to check for updates. This is just sensible but (apparently) not required.