I would say it has to be a new Synth.... Kronos has been their flagship for many years now and even though it has gone through upgrades and "evolution" it is still a Kronos..
Similar legacy to the Yamaha Motif Line really, a new Synth platform would make sense...
Well, there was just a new synth at Namm, the prologue..
Kronos is a workstation..
soundwise, still in top shap trough all the updates Korg gave it..
The only thing they should improve is the touchscreen interface, it feels like a windows 98 pc with touchscreen while operating...
I love the sound engines of my Kronos..