Google's John Mueller said in a Google+ hangout yesterday that the Google Webmaster Tools team is working on updating both the layouts and the text of the messages sent to webmasters through Google Webmaster Tools.
This is in response to some complaints in the hangout to some of the messages not being clear, specifically around the disavow links tool message you get from Google Webmaster Tools.
John said this at 55 minutes and 17 seconds into the hangout:
We’re going through all of these messages that we’re sending out from webmaster tools anyway. To kind of update them to new layouts. So I am sure we will get to that message as well (disavow message he is referring to), specifically to make text changes there too.
These constant improvements should not come as a surprise.
Forum discussion at Google+.
