Fitbit Versa 4 and Sense 2 are reportedly in production, after a YouTube video from a smartwatch accessory maker was uploaded and removed. The video, uploaded by electronics accessories company Wasserstein, was a tutorial on how to apply its screen protectors to the Fitbit Versa 4 and Sense 2.

Unfortunately, we didn’t get a chance to see the video ourselves before it was taken down. But 9to5Google (opens in a new tab) was able to take a screenshot, revealing that the tutorial was not in progress on a real Versa 4 or Sense 2 unit.

Instead, it was led on the Fitbit Sense, a two-year-old smartwatch and one of the models on our best Fitbit list right now. We can take this as confirmation, except in cast, that the Versa 4, Sense 2 and the original Sense will share the same shape and screen size, as accessories compatible with the existing Sense will be able to be used with the two new devices. .

It’s not the first time we’ve heard of this rumor, as a photo leaked last month suggested that the screen would have at least the same shape and a the teardown suggested that the resolution would be identical. We don’t know much else about the two watches, but it’s likely they’ll continue to run Fitbit’s operating system rather than Wear OS this round.

What does this mean for a launch period? The original Fitbit Sense and Versa 3 models launched in September. If prop production is ongoing, that seems like a likely window of time until the announcement. With Apple likely unveiling the next iteration of its Watch in September as well, Alphabet might want to beat its competitor to the punch.

Analysis: Marginal gains

Small iterative changes rather than bold new looks are in line with how top smartwatch makers operate these days. Fitbit, Garmin, Apple… no one wants to reinvent the wheel and take more risk than necessary, especially when their target audience has less money to spend. Small updates, better firmware, improved accuracy, and new software features trump radical new designs.

Of course, small changes come with their own risks: for current Fitbit watch users, the next generation of updated smartwatches may not yet be essential. Everything will depend on the sensor network and improved software to justify an upgrade.

Don’t get us wrong: we love the pebbled design of the Sense and Versa 3. It’s sleek and stylish, evoking contemporaries like the Apple Watch while still being very clean. But if Fitbit wants existing users to ditch everything and upgrade their current watches, the Fitbit Versa 4 and Sense 2 are going to need some serious in-house firepower.