The rumored 7" Fonepad is the first to come to mind, since we've seen quite a bit of proof of its existence. The small tablet is expected to sport an Intel CPU, which would certainly differentiate it from the rest of the devices in this category, although not necessarily for the better.
Then, as we take a look at the image of the invitation, we notice a big 8 or infinity symbol. For us, this could mean three things: a) Asus will introduce new Windows 8 or Windows Phone 8 product/s; b) Asus will announce a new "Infinity"-branded Android tablet like the Asus Transformer Pad Infinity; or c) Asus may showcase a Windows (Phone) 8-powered Infinity tablet.
Who knows what's going to happen, but you can be sure that we'll be there to cover all the news for you, so stay tuned!
An image from Asus's press invite