Pretty sure the 203/205 series is the 4th generation from Oppo in less than two decades. I still use a BDP93 and am overjoyed with it's performance. I would not be the least bit concerned, Oppo builds top quality equipment. They only have two models, and two price points, some think they're too expensive, while I think they are a tremendous value at ONLY $500.
As history has shown, 2018 will probably see some Darbee equipped variants of the 203/205. But as 4K is still struggling to gain marketplace traction, I doubt 8K will be rendering your year old player obsolete any time soon!