I switched to Eclipse 4.2 a while back and everything is perfect, but now I noticed when I right click an XML or XSD file, I don't have the option to validate that file anymore (3.7 worked fine).
Can I add these features through some plugin? Or is the option just hidden in some sub menu?
What package of 4.2 did you download? I think that feature is only available in some of the packages, such as IDE for Java EE Developers and IDE for Java Developers.
Hint: you can see what features are included in each package by clicking the Details link next to the package on the downloads page.