The followings are some addresses of web-sites where you can get the general updated GATE related information.

IIT Bombay           http://www.iitb.ac.in/gate
IIT Delhi                http://www.iitd.ac.in/gate
IIT Guwahati          http://www.iitg.ernet.in
IIT Kanpur             http://www.iitk.ac.in 
IIT Kharagpur        http://www.iitkgp.ernet.in/~gate
IIT Madras            http://www.gate.iitm.in
IIT Roorkee           http://www.iitr.ernet.in
IISc Bangalore      http://www.gate.iisc.ernet.in