Yesterday, we published a video of an alleged official leaked build of Jelly Bean running on the Galaxy S III. Now, less than 24 hours later, it's available for everyone to download. As we saw in the video yesterday, it looks like Samsung kept its Nature UX (TouchWiz) experience fully intact, which we like, and obviously it also packs the amazing new Google Now voice engine. Other tweaks include the fully revamped notification shade, the option to palm touch to mute/pause music or video and more.

SamMobile, which published the ROM, warns that it's a pre-release ROM (obviously) and that you'll lose your warranty by installing the build. However, the build date is July 31, 2012, so it should be fairly robust in its offering. The site said it noticed a new clock, a dormant mode function and new live wallpapers, but that the internal SD card was fully formatted during the update process. Ultimately, SamMobile, which played around with the ROM, says most users should just wait until the final build launches and that this should really only be used by developers. We can't help but agree… waiting a few more days for an official, sturdy build is a much wiser decision than going with one that could potentially brick your phone.

The latest rumors suggest that Samsung will launch its actual Android 4.1 Jelly Bean update on August 29th.

[via SamMobile]