It seems the Touch and Type family is going bigger with this unannounced slider. It packs a resistive touchscreen, dedicated call keys and runs on S40 UI. It will most probably go under X3-xx, C3-xx or something.
There is just one picture of the new handset so far:
Nokia Touch and Type
As we mentioned above, it should most probably go as C3-xx or X3-xx. That's all the info so far, we'll know more when Nokia goes official with it.