Play:5 5.1

I'm looking to create a 5.1 setup with a soundbar, sub, and the largest speakers possible for the side/rears. My supplier hasn't come back with any info, and all of the sonos systems I work with are unfortunately not set up for 5.1 systems for me to test.

Do the new Play:5s now offer the option to make a 5.1 system, or am I stuck with getting the Play:3/1s? If a Play:5 5.1 setup is not an option, when will it be?