With the release of Fall of the Samurai, I have updated my mod to extend the length of all three campaigns. Since the patch also had newer versions of both the original Shogun 2 and Rise of the Samurai campaign startpos.esf files I updated those as well to use the latest versions.
With my mod the original Shogun 2 campaign now ends at 1600 for short, 1620 for long, and 1640 for domination. For the Rise of the Samurai campaign it now ends at 1230 for short, 1250 for long, and 1270 for domination. And for Fall of the Samurai the campaigns are now 1874 for short, 1877 for long, and 1880 for domination.
Also for those who wish to have very long campaigns, I have added a second version of my mod which extends all campaign lengths to 1640 for S2, 1270 for RotS, and 1880 for FotS.
A big thanks to CA for giving us information about their changes to the ESF format, and for Taw for taking this info and giving us tools to use.