In August, we reported that Google via the fetch and render tool, can crawl pages with a rendering of 10,000 pixels high. Well, JR Oakes informed me on Twitter that GoogleBot can now go to even new heights.
GoogleBot Mobile can render and crawl the page as high as 12,140 pixels as he illustrated here:
GoogleBot Desktop can render and crawl the page as high as 9,307 pixels:
Google doesn't like to scroll, so they just use really tall screens. ;-P
Forum discussion at Twitter.