It was re-mixed in 5.1 around the same time as DSOTM with Alan Parsons involved in someway.
As DSOTM was on hybrid SACD it would suggest that Abbey Road will be too rather than DVD-A.
An October release would make sense to tie in with the release of Something in 1969. Abbey Road was released in August 69 but in August were are due to get the Shea Stadium DVD-V.......