Sonos just launched a spatial audio capable speaker of their own: Era 300. Pricey at $559 CAD, but maybe worth a listen. There's a lot of drivers in there, 6 in total, including: front, left, right, and up firing tweeters, and two mid-woofers.
They're supposed to support a 7.1.4 simulation when used as surrounds with an Arc. They should make these things work as front speakers as well. Looks like they have enough drivers to concoct a pretty good front soundstage all on their own...
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