UPDATE: The team over at BBH-Plus managed to extract both the BlackBerry Messenger 188.8.131.52 and BlackBerry Maps 184.108.40.206 apps for OS 6. They were available to download for a short while until the links were shut down. Most likely RIM reported to the hosting site to remove the download links.
The good news is - a few bug fixes were reported, and the leaked version of BBM is confirmed to fix the cursor bug in the app. So I can imagine that the pesky cursor issue isn't far off from being fixed in a official release. NOTE: These leaks were for OS 6 only. Here were the download locations. We'll update them if they show up somewhere else.
- Download BlackBerry Messenger 220.127.116.11 (via OTA)
- Download BlackBerry Messenger 18.104.22.168 (via Desktop)
- Download BlackBerry Maps 22.214.171.124 (via OTA)