This day has been all about Futurama merchandise.. And the title is true, you can already preorder the Futurama Wall Calendar 2010 at Amazon.com. The price listed is $11,19 with Pre-order Price Guarantee, and the item will be available since August 4, 2009.
As you can see, the cover features the New Justice Team: Clobberella, Super King and all the rest.. (Captain Yesterday haha) from the episode "Less Than Hero" + a giant Nibbler, signed (I think) by Bill Morrison (Art Director of Futurama) and the Calendar's theme will be comics parodies.
Thanks a lot to Officer 1BDI, I 'm glad to show you over here the previews of each month. She attended the SDCC 2009, and over there she took some photos of the upcoming calendar... so there you go the comic featured for each month (click the image to see it bigger --->):