Arc brings a new design and feature set, while the Play:5 is now just the Five.
Sonos Arc review: An upgrade worth the wait
Sonos Arc review: this soundbar sounds simply fantastic, Smart speakers
Sonos Arc review: Dolby Atmos soundbar brings big sound
Sonos Arc soundbar launches with Dolby Atmos support
The Sonos Arc is the long-awaited Playbar update with Dolby Atmos support
Sonos ARC reviews released, links inside : r/sonos
The Sonos Arc is the long-awaited Playbar update with Dolby Atmos support
Includes Sonos Arc Dolby Atmos® sound bar, Gen-3 Sub, and two Sonos One SLs (White)
Sonos Arc 5.1.2 Home Theater Bundle
Is Sonos Arc the Dolby Atmos soundbar you've been waiting for? - CNET
Sonos Arc now supports multi-channel PCM for gaming, more - FlatpanelsHD
The Sonos Arc