apparently according to an ASrock rep on another forum VT-d is still available and enabled by default if your CPU supports it and disabled if it doesnt. there is no options to turn it off or on. still i'm keeping my old bios on my board.
i'm still using it for my VT-d cluster. pro tip if you intend to passthrough a GPU do make sure its an ATI card or a proven passthroughable quadro. i've learn that the hard way when i failed to pass my GTX670 through and forced to get an ATI card
as for the Z87... not sure if want. infact im not sure if i want anything that is post win8 for its annoying "secure" UEFI that is anti competitive