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https://www.sigmasports.com/item/Trek/Stache-AL-Mountain-Bike-Frame-2021/RSVO
Looks like they do but it won't be near available under later in the year.
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I have the carbon version and really dig it, makes for a comfy flat bar (50mm rise) gravel bike. But it's not great for bikepacking: the fron triangle is tiny, on XL you can barely fit two small water bottles in. Also the stack/reach ratio makes it a bit short by modern standards, I have it set up with a 70mm stem.
Do Trek still make the Stache? There was a rigid option a while back.
I think someone won the Highland Trail 550 on a Chinese copy, and I've definitely seen a video of someone doing rad things (on the suspended version) somewhere big like Whistler.