Of course, this is more personal opinion (aren't they all personal opinions?) and from another angle but with the introduction of the Tyros2, and the T3 in the wings, Korg needed to seriously upgrade their product, as did Roland, and the only way to do so was try and add content to the existing instruments, because, and this is probably due to poor sales, they couldn't very well afford to make new keyboards.
Korg did this much more successfully than Roland, but this was probably due more to the limitations of the G70, as opposed to the PA's more workable architecture....or maybe it was financial? G70's weren't exactly leaping off the shelves.
Meanwhile we wait for Roland to bring out another TOTL arranger, so the G70/E80 people can have an upgrade.

Yamaha continues to make and sell keyboards...seems like all Roland is selling, for now, is anticipation.
Of course, there's always VIMA.

Audya people have it even worse...they are getting a product that is a heartbreaker...it sounds incredibly good, but it is also incredibly buggy and lacking important features...the owners hope that the OS upgrades will continue long enough to make it completely finished, before the company gives up.
Remember, Diki...you can't rape the willing.