Blass didn't reveal any details on who spotted the smartwatches, where it was, or when, but we're inclined to believe him and the previous information he's provided about the rumored Samsung Galaxy Watch considering his track record with leaks.
Seen on the wrists of Samsung employees: Gear watches running not Tizen, but Wear OS.May 23, 2018
Samsung previously used Android Wear software for its first smartwatch in 2013, but it soon switched to Tizen OS for future generations including last year's Samsung Gear Sport.
We originally thought we'd see either the Samsung Gear S4 or Samsung Gear Sport 2 launch in September this year, but a new trademark application from the company spotted earlier this month suggested it'll be called the Samsung Galaxy Watch instead.
A switch to Galaxy
The fact Samsung employees have been spotted testing out the software suggests the company is well into development for the next watch.
We're hoping that means we'll hear more about it at IFA 2018, which will be a year after the Gear Sport launch.
Blass's tweet didn't provide any details on the Samsung Galaxy Watch such as what it looks like or whether there are any clear new features, but the upgraded software is exciting news.
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James is Managing Editor for Android Police. Previously, he was Senior Phones Editor for TechRadar, and he has covered smartphones and the mobile space for the best part of a decade bringing you news on all the big announcements from top manufacturers making mobile phones and other portable gadgets. James is often testing out and reviewing the latest and greatest mobile phones, smartwatches, tablets, virtual reality headsets, fitness trackers and more. He once fell over.