Arc brings a new design and feature set, while the Play:5 is now just the Five.
Sonos Arc review: Dolby Atmos soundbar brings big sound
Premium Immersive Set with Arc, Sub, & Era 100
Sonos Arc - Black - Soundbar with Dolby Atmos : Electronics
Sonos Arc review: An upgrade worth the wait
Includes Sonos Arc Dolby Atmos® sound bar and Era 100 surround speakers (Black)
Sonos Arc 5.0.2 Home Theater Bundle
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
It's confirmed Sonos ARC with Dolby Atmos & Enhanced Trueplay : r/sonos
Includes Sonos Arc Dolby Atmos® sound bar, Gen-3 Sub, and two Sonos One SLs (White)
Sonos Arc 5.1.2 Home Theater Bundle
The Sonos Arc is the long-awaited Playbar update with Dolby Atmos support
Sonos Arc review: An upgrade worth the wait
Understanding Dolby Atmos and Sonos Arc