I would say there is a fairly good chance if the 1000 has DV and HDR strip ability so "may" the 800 get those features at some point. But when you look at the 2017 Sony Tvs, the pricey 930 has the Extreme chip and is DV capable, and the cheaper 900 series does not. So who knows what Sony is up to here with a large discrepancy between the players ($299 vs $799-$1000) depending where they finalize it). You and I both don't know for certain what the differences are.
Like I said in my last post, excellent build quality for a $300 player, no doubt about it. Great chassis build quality. To date, there is no low price point UHD player, with an HDR Strip function built in. The only one is the Oppo 203 at nearly double the price of the 800.
I believe they have entirely different chassis because from the pics as the 1000 looks quite a bit taller and I also recall reading the 1000 will have isolated bracing/chambers between audio stage, video stage and power supply. Will be interesting to see if they share the same drive and power supply, among other things.
Re chassis, look at the f85 vs the F88, both nice, both weighty, but the F88 has much more sector isolation, with a bit more resonance control. Sometimes you do get what you pay for, but with one example of that, there are many examples where you don't.
My brother also has the UHPH1, it's no doubt an excellent player.
Check out the Pioneer video at 2:10 where the differences between the 85 and 88 chambers are shown. Both well built, but the 88 goes much further. I am hopeful the Sony's X1000 has also taken a similar path.