Google seems to be testing a new feature named “Quick View” in their smart phone enabled search results. The feature lets you load a page from the source web site in a quicker method, instead of loading the full page, which might require longer download time.
Here is a picture of searching for [seo] on an iPhone 5 where a Wikipedia result shows a big blue button for “Quick View”:
Wissam Dandan discovered this and shared it on Google+.
I have emailed Google for more details, but I suspect a response might take some time during the holiday break.
Note: Quick View, the terminology has been used by Google prior when viewing PDF files on Google’s search results.
Postscript: A Google spokesperson sent us a note:
We’re always working on ways to make the web faster, especially on mobile devices — this is one of the experiments we’re running.