By using inside-out tracking method which the company referred to as the Oculus Insight, there is no need for external sensors as opposed to the original Rift headset. Rift S also utilizes the same Oculus Touch motion controllers and integrated audio system as per Quest. Another interesting point to add is the fact that Rift S was actually co-designed by Lenovo. According to Oculus, the Chinese company helps deliver better comfort, weight distribution, and light blocking for the new headset. Not to forget, another big improvement that Rift S has brought to the tablet is the 2560 x 1440 display which equivalent to 1280 x 1440 per eye. As a comparison, the display on the original Rift headset has a resolution of 1080 x 1200 per eye.
Oculus didn’t provide an exact release date for the new Rift S although the Facebook subsidiary stated that it will be released in Spring 2019 for USD 399 (around RM 1621) which is oddly the same release timeframe and pricing as per Quest. (Source: Oculus.)