Posted: Mon Jul 11, 2011 11:06 am
I think 53. Some of those are revisions to previously existing upgrades.
Here's JP1-master-1.09.
There are about 280 new upgrades, mostly submitted by eferz and Alan Richey.
I find it convenient to keep all of the upgrades on my computer, and you can download the upgrades from here in bulk using JP1 Scraper