It's just the natural evolution of a GPU to eventually be converted for notebook use, and now we see early evidence that Nvidia will be making a mobile version of Fermi ready for sometime next month.
A listing on Eurocom's site for configuration of one of its laptops lists a 2GB DDR5 GTX 480M Nvidia DX11 100W part as a $380 upgrade option. Since then, the option has been removed from the site, likely due to the fact that it's an unannounced product.
Of course, an Nvidia partner listing a product prematurely is no means a confirmation for the product – but this does offer some hope for those waiting for a new-generation Nvidia part for any upcoming notebook purchases.