Those of you watching the new email@example.com account already know this, but those that have missed this are advised, that a large number of strings (a little more than a hundred) for the new account autoconfiguration feature landed yesterday. More information can be found in the corresponding bug report (bug 490097).
There may be some further changes to these strings as we re-layout the autoconfig dialog, though those changes are expected to be minimal. These strings will be part of Thunderbird 3 beta4. I'll have more on the timeline of that release in a few days.