Its far too early to be thinking of future proofing yourself for 4k support. Future proofing is a bad concept anyway. How many times have we seen early adopters with kit that dosnt support the standards actually needed by the time things go mainstream? For example, people with HD shop display plasmas which had no HDCP? For a couple of years they could impress there equally uniformed friends that they where already ready for HD, only to find they had a heap of junk.
Right now there are lots of chips with Generic H265 support. We have no idea if Generic H265 will be used on the yet to be announced disk format. Rovi already have the 4K VOD market using Divx HEVC, and could do the same with optical disk. Generic H265 could end up playing very little but 4k camcorder video.