Will they add Real ICE support for ATMEL parts?
I think the better question is, with the whole Arm ecosystem available, why would you give Microchip's tools a second thought?
Maybe they'll fix that age-old problem of having to debug the hardware debugger when it doesn't work, to which many man days are lost. I rather doubt it!
Pushing everthing down the Harmony route stinks of vendor lock in. If only they'd spend their efforts in making a much more lightweight and approachable set of targeted APIs for the complex peripherals, rather than such an over-complicated and intractible framework which takes longer to learn and is still not production strength after four years.
By adding the Atmel parts into to an all encompassing framework, they're going to hit exactly the same age old problems that all wet-behind-the-ears blue sky utopian thinkers do in this scenario, they think they can wrap everything up in a sugar coated pillow, but the end result is a Frankenstein monstrosity with too many compromises. Innevitably we're back to hitting the hardware registers in many cases to deal with the limitations of the framework itself.