Catalyst Game Labs have posted an updated PDF version of their BattleTech Total Warfare PDF.
From their website:
We aren’t ready to reprint Total Warfare yet, but we wanted to be ready for when it was–and you benefit, as the Total Warfare PDF has been updated to contain the latest errata and some other minor touchups. If you’ve already bought Total Warfare as a PDF, you should be recieving notification of the upgrade shortly via email. If you haven’t bought the PDF yet, now is a great time–get the latest version for the new low price of $15.