Hello,
All officially gathered errata and patches up to 1 October 2010 (Patch 2010-1001) would have been integrated into the latest PDF and print copies of A Time of War. Patched dated later than 10/1/2011 were not integrated at the time of print, and likely have not been integrated into the PDFs at this time.
Hopefully this helps you.
Thank you,
- Herbert Beas
BattleTech
Catalyst Game Labs