Holy Smokes there a whole bunch of new G Shock models have been announced. I can't even try to keep up with them all so I'll just refer you to mygshock who has it all covered.
I will point out that the new Mudman model G-9300 is my favorite. I think this looks great and I think the Mudman can now be the official Field Watch for G Shock with a digital compass, thermometer, moon phase display and of course the mud resistant case. Is it me or do the buttons on the right side look similar to those on the original Mudman DW-8400?
Here's a direct link to Riley's Mudman post.
And while you are there, check out the other new releases.