You know, he didn't existed before you heard of him. I think whether you heard of him or not is so irrelevant. He's well known reviewer. He didn't become famous because of his pre-released review.
Of course it's sudden because he reports about device for 2011. and he wants to describe it in a few words. Blowing out N900 out of the water says very much about how good something is, right? How many people do you know on the internet that have that kind of connections and that kind of insight in future of mobile phones?
No pics, of course, he wouldn't show us N920 pics because he doesn't want to harm companies that much. If you're going to say "and what about N900!?" - he did a preview week before it's official announcement and said he thinks he cannot harm it that way. He had a N900 from May, so he could do it much much earlier if he wanted to do as much damage as he can. About device for 2011. - other blogs don't know that stuff.