ESPN and Discovery have announced plans to launch 3D networks in the coming year.

THR reports that ESPN will unveil theirs this summer, beginning with the first 2010 World Cup match (between South Africa and Mexico.)

Discovery is teaming with Sony and Imax for its own 3D network, to launch sometime next year.

Of course, to watch 3D TV, you'll need a new 3D-ready TV set, as well as 3D glasses!

I have to admit, I wasn't really that impressed with Avatar in 3D, so will viewers be rushing out to buy a brand new TV for just two channels?