That's what it looks like, but maybe they plan to only support XB1 S and X with cross-gen games for a year or so.
They will probably discontinue X in 2020 if Lockhart is basically an X with a few improvements like Windows Central's sources suggest, and drop any remaining X stock down to $250 to clear it out. There would literally be no reason for somebody to buy an X instead of Lockhart if they are about the same price but X can't play next-gen games like Lockhart can. S meanwhile will likely keep selling for $150 or so until it is discontinued around 2022 most likely.
I imagine they would want to discontinue the X1S first given that would become the most difficult to support over time and is already getting some underwhelming ports. I don't think they want to sell it for $149 either. Instead I feel like they would just push the X1X at $249, maybe there would be a remodel to make it cheaper to produce as well.
In that scenario, the entry option of X1X at $249 should be capable of playing modern games well at 1080p (or higher) with potentially reduced performance due to the dated CPU. While the Scarlett consoles will be priced higher at $349 and $499.
Gears 5 for X1X (5/5) - Mortal Kombat 11 for X1X (5/5) - Doom 64 for N64 (emulator) (3/5) - Crackdown 3 for X1S/X1X (4/5) - Infinity Blade III - for iPad 4 (3/5) - Infinity Blade II - for iPad 4 (4/5) - Infinity Blade - for iPad 4 (4/5) - Wolfenstein: The Old Blood for X1 (3/5) - Assassin's Creed: Origins for X1 (3/5) - Uncharted: Lost Legacy for PS4 (4/5) - EA UFC 3 for X1 (4/5) - Doom for X1 (4/5) - Titanfall 2 for X1 (4/5) - Super Mario 3D World for Wii U (4/5) - South Park: The Stick of Truth for X1 BC (4/5) - Call of Duty: WWII for X1 (4/5) -Wolfenstein II for X1 - (4/5) - Dead or Alive: Dimensions for 3DS (4/5) - Marvel vs Capcom: Infinite for X1 (3/5) - Halo Wars 2 for X1/PC (4/5) - Halo Wars: DE for X1 (4/5) - Tekken 7 for X1 (4/5) - Injustice 2 for X1 (4/5) - Yakuza 5 for PS3 (3/5) - Battlefield 1 (Campaign) for X1 (3/5) - Assassin's Creed: Syndicate for X1 (4/5) - Call of Duty: Infinite Warfare for X1 (4/5) - Call of Duty: MW Remastered for X1 (4/5) - Donkey Kong Country Returns for 3DS (4/5) - Forza Horizon 3 for X1 (5/5)