It's been a while since we've seen an update to BlackBerry Messenger (either leaked or official) but thanks to our own BigBadWulf we have a new version from the Bold 9650 leak of OS 126.96.36.1996. This version is only at 188.8.131.52 which isn't much higher than other versions we've seen floating around. No real news on what (if anything) is updated, but be sure to leave a comment with your findings.
Please note: This is an unsupported version of BlackBerry Messenger so be sure you backup your device before installing. It should run fine, but it never hurts to have a backup :-)