Well, its available somewhere.  I can’t seem to get the link going here in Australia, but Steve Bennett did (see image and tweet below).  I’m guessing this is only in certain localities?

Here is a PDF about it:
http://static.autodesk.net/content/dam/autodesk/www/products/autodesk-revit-family/docs/pdf/Revit_RevitLT_online_trial_final.pdf

And some Google search results:

Heads-up: