The Squeeze players (SB3, Duet, Transporter) have all supported HiRez, in that they can play 24/48 natively (TP is 24/96 max) and up to 24/192 with SOX downconversion. Now the Touch has been announced to join the TP to also have 24/96 natively.
The Duet's supposed HiRez (24/96) capability is a rumor, but nothing has been made concrete. It would be a huge product overlap, but oh well.