Just ordered the SB3831-DO (3.1) from Best Buy. Pick-up this afternoon. All others on the site appear to be last years models.
Just saw pic posted by dishdude1 of this model. Appears to have square sub. If it does have the square sub I will pass on it.
Also, just spoke to "sales" at Vizio and was told the SB3831-DO was NOT a new SmartCast soundbar.
Last edited by hvowell; 05-17-2016 at 12:13 PM.
Reason: Added Info