There is a new Driverack model, the Plus, to replace the last one. The last model was not as good a choice for home audio use for active speakers, or for HT use. It did not have a computer interface GUI(you had to go to the much higher priced Driverack to get computer interface), it had less inputs (2 instead of 3, which adds up quick in HT use where you need many input channels) and not digital audio input. It has less bandwidth also(48kHz compared to 96kHz). The new model appears to have a USB interface on the back, but I don't know if they have a GUI software for it, but I imagine they do. It also still does not appear to be daisy chained to 'slave' units to use for many channels, like for HT, that the DCX is very capable of doing. And of course, you would need 3 of the Driveracks to do a HT set up where only 2 DCX are needed, since the DCX has 50 percent more input channels. The new model still has half the bandwidth of the DCX and no digital audio input.
DIY speaker builders overwhelmingly prefer the DCX, and those that have tried the Driverack usually also preferred the DCX. Pro use is a different matter, and the Driverack has some specific features that make it easier to set up for pro installations. But this is a very different application as compared to home use.
-Chris