I'm betting the standalone monitor will come once they move to Thunderbolt 3. Spec wise, Thunderbolt 2 (due to the displayport version it uses) lacks enough bandwidth for a 5k display. Will be interesting to see the teardown of the 5K iMac and see how they wired the screen up to the GPU. Notable that they also went back to AMD graphics for the 5k only. Price premium for the screen seems to be around $500, based on a comparison to the older 27 inch iMac.

Interesting tidbit on the cellular iPad Air 2 and Mini 3 models, an Apple SIM: http://www.macrumors.com/2014/10/16/ipad-air-2-apple-sim/ . This allows US users to use AT&T, T-Mobile or Sprint for data without SIM swapping.

Resolution wise, the iPads match last year's offering, at base 2x Retina of 2048x1536. Probably waiting on some newer displays to be able to go 3x like the iPhone 6 Plus.