There were a bunch more files included in that latest leak and this is the last of them. Once again I think the source looks like CBForums so far. Either way kudos to whomever made OS 188.8.131.52 for the BlackBerry Bold 9790 and BlackBerry Curve 9380 available.
You can pick up the updated OS’s here (hopefully mirrors will come soon):
Warning: This OS will not install on any other BlackBerry besides the one mentioned above and is not an official release.If you do not know how to upgrade your BlackBerry OS please start by reading this step by step guide.Don’t forget to delete the vendor.xml file located in c:program files>common files>research in motion>apploader to install it on a different carriers device. Don’t forget our usual warnings: do not download and install these updates if you don’t know what you’re doing. Incorrect procedure or just bad luck could render your BlackBerry inoperative or unstable.