Analysis of information sources in references of the Wikipedia article "Oculus Rift" in Greek language version.
Rift S replaces the original Rift with an upgrade to a higher resolution display, improved optics, and a feature called Passthrough+ … Because Rift and Rift S share the same core platform experience, current Rift owners will be able to take advantage of our continued software updates.
While we don’t comment on specific shipment windows or allocations, [we] can confirm [the] original Rift is still available for sale at Oculus.com and from our retail partners while supplies last.
So Rift S is gonna wholly replace Rift. We're actually in the process of phasing out Rift right now.