They are actually blending better into my site then I thought originally... Amazingly, since the "Ads by Goooooogle" isn't the top - but the bottom... you can blend even better!
I think the label is a bit too prominent for some peoples liking. Perhaps the old way was more discreet.
Check this out.... https://www.google.com/adsense/static/en_GB/AdFormats.html It gives you examples of all the banner sizes (like before) but what they all look like with the update... I actually think it looks better than before. I think the text was a bit ugly if you had a certain colour. But the little Logo fits in well and it's not tacky.
Also when the page was first updated some of the examples weren't showing. Looked as if they forgot to upload a few images (the seasonal ones at the bottem and 1 of the video ads weren't working)
I think they are just examples of what it USED to look like. And if in the future they do it again what it might look like Halloween 2005 Wouldn't be much point updating one that probably not going to be shown again
I think the new ad style is a positive upgrade for users, publishers, advertisers on a number of levels. In fact, I'm surprised Google didn't do this earlier.