Hopefully they will add that. It would be nice to get 5.1 from this soundbar.
It could be that I wasn't presented with established a "Play-Fi Surround Master" because I only have the FS-EB70. If/when I invest in more DTS Play-fi speakers I'll give it another shot. But I'm not holding my breath on the FS-EB70 having "Play-Fi Surround Master" capabilties.
It is discouraging to see that the higher-end capabilities of DTS Play-fi are _not_ supported, e.g. Hi-Res Audio up to 24-bit/192KHz via Critical Listening mode
IF this gets the 5.1 surround ability I will DEFINITELY get it! I dont have much hope though. I use MusicFlow with the proprietary LG surround bar and 2 of their MusicFlow surround speakers. Although they are fairly easy to setup they constantly lose signal or go out of sync. I also have Polk which is Play-Fi and it has similar problems. Not as bad as MusicFlow but still problems even though they have their own app for Play-Fi.
This must be a very difficult engineering problem BUT it seems like SONOS can get it right and no one else can...