HiTechnic has released its Prototyping Board - from its website:
"The HiTechnic NXT Prototype board is available in two models, one with a prototype grid to solder your designs creating a permanent sensor or device interface and the solderless design that plugs into a solderless breadboard so you can quickly create many designs and reuse your electronic components."
Also available in addition to the two boards will be a parts kit (avail. Dec 3) .
So, the big question is: what will you do with it? Take some time to read the product page descriptions here - there's a LOT to read.