Seiya-san has posted a shot of the GW-5000B-1JR page in the new Casio catalog. This model has the new 3159 module. It's going to retail for nearly $460 USD, and you can pre-order it now. But it might be better to hold off for some better deals. There's small photos of the tin and case back. It's great to get a better look at this one, and in May we should see some real life shots.

Link

New GW-5000B-1JR G-Shock