I noticed Sony's new Xperia Z3 smartphone will support DSD format. This has really perked up my interest.
Update: Z3 Compact also supports DSD although it was not listed in the website.
http://www-support-downloads.sonymobile.com/d5803/whitepaper_EN_d5803_d5833_xperia_z3_compact.pdf
Z3
http://www.sonymobile.com/global-en/products/phones/xperia-z3/specifications/#tabs
Z3 Compact
http://www.sonymobile.com/global-en/products/phones/xperia-z3-compact/specifications/#tabs
Update: Z3 Compact also supports DSD although it was not listed in the website.
http://www-support-downloads.sonymobile.com/d5803/whitepaper_EN_d5803_d5833_xperia_z3_compact.pdf
Z3
http://www.sonymobile.com/global-en/products/phones/xperia-z3/specifications/#tabs
Z3 Compact
http://www.sonymobile.com/global-en/products/phones/xperia-z3-compact/specifications/#tabs