E-on isn't famous for giving away anything!!! And true, it's Fusion is aimed at the big studios, so I doudt it will be free too! Moreover, it will give the Max/Maya/C4D users the possibility to render their Vue scenery with Mental Ray or Cinema's advanced renderer, which means lots of time saving on the rendering process, because, let's face it Vue is very slow to render. So I really doubt it will be free. But I guess the demo will!