The latest OS leak, OS 5.0.0.190, delivers native threaded SMS for BlackBerry. While you won't get the tabbed browsing as seen in previous OS 5 leaks, the native SMS client is reason enough to download. But remember, as with all OS leaks, proceed with caution! Always back up your device first because you may lose data.
Threaded SMS with BlackBerry Bold and Curve 8900 OS leaks | BlackBerry Cool
MEGAUPLOAD - The leading online storage and file delivery service