The Apple Watch Ultra 2 has an extra-bright display and S9 chip

Apple's premium smartwatch is getting its first major upgrade. During its annual fall event today, the company showed off the $799 Apple Watch Ultra 2, the first update for the high-end watch meant for extreme athletes and others with more specialized fitness-tracking needs. As expected, the second-gen device will keep the same 49-millimeter form factor as the original, but still offers some significant upgrades. Notably, the Ultra 2 comes with a new extra-bright 3,000 nit display -- up from 2,0...