Ubuntu releases a new version twice a year which is a lot more than any other operating systems in the world. However, not all of the versions are supported in the long run but its Long Term Support (LTS) versions are usually a must-have for most people especially with those that wants a stable support for their computer.
For the first part of the year, Ubuntu had just released version 12.04. The good thing about Ubuntu 12.04 codenamed Precise Pangolin is that this version will be an LTS version. This means that this particular version of Ubuntu will have both commercial and maintenance support for a period of up to five years. Just so you know, not many versions of Ubuntu comes with this support but when an LTS version is released, the demand for it will be relatively higher than the other versions that are released every now and then.
Some improvements that have been done are bugfixes and tweaks, better power management, additional tools for the GUI and more. There are three versions to choose from which are Desktop, Server and Cloud and each with its own set of advantages and disadvantages. For those that have been waiting to replace their LTS version of Ubuntu, here is the time to do so.