More boards on their way. This is just what newegg has as of today.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007627%20600093976%20600315497&IsNodeId=1&name=Intel%20Z75%2fZ77 <----- Z77/Z75 boards so far
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128540 <----- B75 boards so far
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007627%20600093976%20600315499&IsNodeId=1&name=Intel%20H77 <----- H77 boards so far
http://www.newegg.com/Product/Product.aspx?Item=N82E16813121554 <------- B65 boards so far
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007627%20600093976%20600315497&IsNodeId=1&name=Intel%20Z75%2fZ77 <----- Z77/Z75 boards so far
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128540 <----- B75 boards so far
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007627%20600093976%20600315499&IsNodeId=1&name=Intel%20H77 <----- H77 boards so far
http://www.newegg.com/Product/Product.aspx?Item=N82E16813121554 <------- B65 boards so far