instead of Beagle Bone Black ordered Beagle Bone unintentionally a huge mistake. I just realized when I unpacked know.
I am going to make and interface for a touch LCD. Are there different in this feature? I mean if I make one for BB would it be worked on BBB?
You can look at the designs for the latest beagleboardtoys LCDs which work with both BeagleBone and BeagleBone Black.
The hardware related to graphic is changed in the new board or not?
It is the same. For operation on BBB you may need to disable the HDMI. But the HE pin out and functions are the same.