Footage of the clip gives the impression that is very similar to the Nokia 700 is still based on Symbian, but equipped with a screen that is much more broadly. According to rumors, if the size of icons in this clip as compared to the size of icons in the promo clip Nokia Lumia 800, then the product Windows Phone that you see in the clip below has a diagonal screen at least 4 inches wide.
Of course the above comparison can not be used as a reference for sure, and the clip above may be just as a reference image and may not be true as the final form. However, it makes more sense for Nokia to launch Windows Phone exciting new smartphone at the beginning of the year. Lumia is a pair of releases including the excellent, but probably not enough to exclude Nokia from the difficulties caused by their own mistakes.