The whole Virus line have been going strong since the beginning, it survived the time when hardware was frowned upon and plugins were predicted to practically end hardware. The market for hardware synthesizers are right now bigger than it has been for some time.
It's obvious that Kemper have his attention elsewhere, but that doesn't mean the end of the Virus. It wouldn't surprise me if he will go back to his roots whenever he feels guitars amps are getting boring.
Regarding it being too costly - I don't know about that. Nords are selling well and they are VAs/Romplers, Teenage Engineering are selling the OP1 for quite a big lump of dough and it has been going since 2013. Elektron are selling their boxes like hot muffins - and they are not cheap either.
The Virus line have served me well since the B model and every time I turn on my TI I'm still blown away about how cool things you can do with it. And I work as a sound designer.
My biggest fear is rather that it will just drop out of a clear blue sky one day, cost 2500 Euro and I will pre-order it even before I've finished reading the specs
/C
