What a welcome surprise for a Saturday. I am sure many people with 9650 Devices have been waiting for this; although keep in mind this is a leaked version. While doing the write up I noticed that Adam over at CrackBerry did a nice video showing this leaked OS running on a 9650 so I included that video below.
You can Download the Bold 9650 OS 188.8.131.52 from:
Notice/Disclaimer: This is an unofficial RIM software release so Install at your own risk. Since this is unofficial leaked software their is no guarantee of stability. This product will not be supported by RIM or your carrier if any problems arise. PLEASE, if you choose to upgrade with a leaked software version it is strongly recommended that you make a backup before using any leaked software. 3rd party apps and software also may not work when upgrading.
If any of the above comments makes you unsure about doing an upgrade then you should wait for an Official RIM software Release. If you choose to install, you are doing so at at your own risk. BlackBerrySites is not responsible for any malfunctions, crashes, incompatible 3rd party apps or BlackBerry devices deemed inoperable.
Source BBLeaks (OS Leak)
Source CrackBerry (Video)