No.
When OLED becomes cheap enough, XR will replace LCD with OLED. Updating LCD to 1080p or whatever is just unnecessary at this point. As much as I appreciated slight display improvements when I upgraded from 6S to 7 Plus, 3x scaling then downsample by 1.15 was a hack.
And likewise, when microLED launches and can be manufactured in sufficient quantity, XS will replace OLED with microLED.
I think XR will always have single front and single rear cameras, however, and rely on algorithms to improve quality and do other magic (similar to what Pixel is doing). Single front and rear cameras, coupled with cheaper screen, will help XR achieve mid-range price target.