So, curiosity got the best of me and I gave Win 8 and spin and as said I lreally liked the new task manager, fast installation and overall it felt smooth and snappy..but I had to uninstall in the end as my favorit applications weren't supported yet and I could not use em. Not to mention I was battleing with my machine to simply restart, which I however found out eventually and could get used to it quite easily.
What I disliked the most were the ''forced'' applications and their lack of customization. Let us customize the hell out of it and I might start to see why to get WIN 8 but untill than, I feel I am better of with my current Win 7 X64.
So back OT, I also have big doubts that Win 8 will be widely popular unless they will allow its users to customize their new OS little more.