There is no information about D:OS 2 yet; it is being built on the D:OS EE engine, but there is still a lot of development left to do.
For D:OS EE, the requirements are similar to D:OS (a little more graphically demanding, but with optimizations and multithreading improvements), except for being 64 bit, rather than 32, and in Windows using DirectX 11 rather than 9c. From the
EE FAQ;
Min. requirements: Windows 7 SP1 64 bit or Windows 8.1 64 bit, or higher; Intel Core 2 Duo E6600 or equivalent, 4GB memory, DirectX 11 compatible GPU
Recommended: Windows 7 SP1 64 bit or Windows 8.1 64 bit, or higher; Intel i5 2400 or higher, 4GB memory, NVIDIAｮ GeForceｮ GTX 550 or ATI Radeon HD 6XXX or higher
