Google has confirmed last week that they are officially bring "one-line sitelinks" to the Google search results.
In early March rumors of these Sitelinks were spotted first in the UK region. Then the tests of the classic sitelinks continued and we saw them in the US. On April 15th, the day before Google announced it, it seemed to be available to everyone and there were some great insight posts on how they work.
Well, now they are here to stay, after just under two months of testing.
Forum discussion at DigitalPoint Forums.