So where does any of this mention Wear OS? Glad you asked. All of the aforementioned reference were accompanied by something that says "newos." It's not that hard to crack the code as "newos" obviously stands for: "new os" or new operating system. It is possible but highly doubtful that Samsung is talking about a different OS than Wear OS. Another codename discovered by Weinbach, "merlot," could possibly be code for the name of the chipset that will power the new wearables.

Tipster says that Samsung will replace Tizen with Watch OS on its new 2021 timepieces
Google reportedly was working with OnePlus to improve Wear OS and while Tizen was good enough to help Samsung remain lodged in second place among smartwatch manufacturers last year behind Apple, there is a huge difference in the market share belonging to Samsung and the latter. Tizen doesn't bring the same number of apps to the table as Wear OS does which could be the main reason for a change if indeed one is made. More apps could mean more demand for the new Galaxy Watch 4 and Galaxy Watch Active 4.
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