Only that it will use the Wolfson WM8741 DAC (CD17/CD37) and some clocking technology in partnership with dCs. (Apparently the CD23 and CD92 had technology worked on with dCs)
There will be two versions; wired and one with a wireless option.
The wireless option will be proprietary to Arcam and will be shipped with a USB 'dongle' for the purpose.
The wired version will be launched first (£300) and the wireless (£400) to follow later.
No actual launch dates that I can find though.