Google Caffeine data has been integrated with Webmaster Tools and the results are significant. Link counts have increased as much as 1000 times by some accounts. The new Caffeine infrastructure allows the search engine to drill deeper into content and this increase in spidering has helped increase the information available for Webmaster Tools. Google Caffeine is not supposed to change the PageRank of a website. Rather Caffeine's impact will change how Google indexes web pages: the speed of gathering content, scalability and how deep they drill into a website or a web page.
Google has stated that they do not plan on reducing the amount data made available to Webmaster Tools in the future.