Quick update (for once): The patch adds quite a lot. It's kinda like a full-fledged DLC indeed. Judging from the script sizes, there's about 11% more stuff to translate now.
Fortunately, scripts that I have translated remained mostly the same, with only a couple of lines moved around here and there. I have already rearranged everything to match the new scripts (hopefully without messing anything up), so the patch didn't cause any issues (well, except for knocking the progress back a few %, due to a ton of new content). ^^
Godspeed and good luck, I've been waiting for this one for a long time now. Pick games hit all the right notes with me because they aren't super lighthearted and actually make me feel something, which is more than can be said for most RPGM games.