“SilentMike” (a member of the German SystemKameraForum) seems to have found a document (on Sony’s websites???) that describes the new NEX firmware upgrade features. It will bring new art filters like (pop-art, toy-effect, retro-style,red-only filter, High-Key and more). And there is also a new feature that enhances the outline of in-focus ranges with a specific color.
UPDATE: This is the english version of the manual (http://pdf.crse.com/manuals/AE1T100111.pdf)