About two weeks ago, Google updated the Webmaster Tools link reports to provide some more actionable data and cleaner interfaces. But it left out a key metric for some SEOs, the metric of "total links."
Late Friday, Google announced in a Google Webmaster Help thread that they added it back. Jonathan Simon of Google said:
I'm happy announce that we've added back the "Total links" count in the "Links to your site" section of Webmaster Tools. Now when you go to the "Links to your site" section you should see "Total links :" displayed at the top of the page.
So now if you go to your link reports, you should see at the top, "Total links." Here is a picture from this site:
Forum discussion at Google Webmaster Help.