W3C HTML5 Logo Unveiled
I'm not certain I like it.Think about its purpose; it needs to work with a huge range of styles, each of which will have specific and varied audiences.The choices made (collegiate typeface / bright orange) are quite bold; I don't think it lends itself to sympathetically supporting a broad range of differing styles of design.Also, when this is used, it's likely to be quite small - the gap between the tail of the '5' and its upper curve is slight.  I think it will have a tendency to resemble a '6' at smaller resolutions.Maybe I'm being too negative, but on top of all this I don't think it looks visually appealing or balanced.  I don't think the proportions (forced perspective / surrounding gap vs. typeface weight) are pleasing to look at.But then again, maybe once we see it everywhere, it's ubiquity will create new associations and familiarity will win out.