Concern over 4k and replacing

[U7ysses S Gr4nt]

Hello all,

I have a blu-ray collection of roughly 400 films, and roughly that many on DVD. I've been slowly replacing most all of my DVDs, but given the craze that 4k COULD generate, is it likely I'll have to do this with ALL blu-ray discs, too?

For instance, in the past week, I replaced Stir of Echoes and Frailty. Will these really be titles that receive 4k release?

My knowledge of the technology is limited, and would like input from those of you who really know this stuff well.

Thanks