Thanks Baba Yaga. Here is what I found at ins.gov forms-
Both form I-765 and form I-9 mention about I-688B. In I-765, under \'Part I-General\', there is \'Purpose of Application\' and \'Definitions\' (or just search for 688). After reading those 2 paragraphs, I have a feeling that EAD IS I-688B. Can you (or someone else) also verify it? - Just for peace of mind! I am attaching links to both the forms -
http://www.ins.gov/graphics/formsfee/forms/files/i-765.pdf
http://www.ins.gov/graphics/formsfee/forms/files/i-9.pdf
Thanks a lot in advance!!!