The new update will add Google Internet search directly to the XMB interface. It will replicate the Google search experience, giving the same search results that you’d get using google.com, making web searches easier. The new search icon will be located under the XMB’s network icon.
Another new feature that will hit in the 4.00 update is the ability to change the viewing speed during playback of videos on your memory stick. It is as easy as pressing the up and down directional buttons as you watch.