Engadget - So, it looks like Precise Pangolin has just crawled out of its Alpha hiding hole, and into the open plains of Beta testing. The Beta 1 version of Ubuntu 12.04 is available to download today, and Beta 2 is already in the crosshairs, one month from now. Being an LTS (Long Term Support) release, we knew changes weren't going to be drastic, but there are some noteworthy ones.
Aimed at developers, Bash brings a complete Linux command line to Windows, but only the command line.
Yes, that is correct, as per industry sources, Canonical - the company behind the popular Ubuntu Linux distribution and Microsoft have partnered up to integrate Ubuntu into Windows 10.
It's not a Linux distribution, but it's practically a new Ubuntu flavor.