Bought a Sonos Beam in Dec 18. I had been hoping for a Playbar update but still no news. There was an offer at Harvey Norman, and decided to take the plunge.
If an updated Playbar comes along, the Beam can go into my bedroom, and the Play:1 can come out as surrounds. The Beam is also more future-proof as it supports HDMI Audio Return Channel (ARC), Apple AirPlay 2 and Voice Control