Simsi - 10:31 pm on May 7, 2011 (gmt 0)
I saw it this morning (using IE) from the UK (but on Google.com). Have to say my initial impression was that I thought it looked cleaner and easier to read and I liked the fact that sponsored results were so much more obvious.
I used it for half an hour or so then this afternoon it (and I) reverted and whether it's just a familiarity thing or not, I decided I still prefer what we see now as far as organic listings go although the "new style" sponsored listings I saw earlier I thought were better.
Oh...incidentally, and not sure why, on searches with no sponsored listings I found I wasn't looking at the #1 SERP first for some reason. Always seemed to clock #3 or #2 and then look up. Must be to do with the extra spacing I guess.