A lot of newer dishwashers have longer cycles to reduce water usage (and I presume get government environmental certifications like EPA Energy Star?). More soak time means less water needed.

My dishwasher's "normal" cycle is 3 hours, but it has a quick cycle that runs in an hour and does about as good of a job with marginally higher water and energy use. We mostly use the quick cycle.

Mine (Bosch 500 series) has a super long drying cycle, what feels like 30+ minutes after it's done washing.