I already have Ubuntu 11.10 installed. I have used Wubi to install it. I want to know is it safe or okay to use Ubuntu live cd of 12.04 LTS to test the new functionalities without modifying or changing anything of current Ubuntu installation ?
For faster loading even u can try with live USB, you can also create a small home folder(Persistance), to keep some personal files. This also doesn't touch your current install.