With, Caffeine‘s live now, Google is indexing more contents at a faster pace, leading them to show more data in Google Webmaster Tools. If you look at your link report in Webmaster Tools you may notice you’ve more links than you had last time.
JohnMu, confirmed it in a Help thread:
Yes, we revamped the data behind the backlinks feature in Webmaster Tools — it has started using more data from “Caffeine” for some sites and is planned to continue with a bit more data in the next week or so. The goal is to have more fresher & up-to-date data there :-).