Google is testing yet another new look for its search results pages, this time adding more white space beneath the search box where the word “Search†appears in red beneath the Google logo and the number of results appear under the search box, I think it will increase Google Adwords revenue for more detail please visit http://searchenginewatch.com/article/2109641/Google-Testing-New-Search-Results-Page-Removes-Icons
Lately google search results has been crashing my IE 8 on Windows 7, so I hope they fix some stuff. However, it works perfectly on Chrome. Go figure.
If you are using "white hat" SEO techniques than how could a Google update hurt you? Personally, I dig the new interface... it is so much more clean.