Hint: It’s not a paint color.  There are a lot of rumors swirling about what Windows Blue is.  Thus far, we can conclude that it’s not a service pack.  Windows Blue will be closer to what Mountain Lion is to Apple’s OS X.  We know this because since XP service pack 2, Microsoft has decided that any update that introduces new features is not a service pack.  As of right now, no one really knows what it is.

What can you expect?

There’s not much that’s official yet.  However, we can speculate on a few things.  One is that it’ll allow Windows to run on tablets that are smaller than 10.1 inches diagonally, Windows 8’s current limitation.  There should new built-in apps.  One that was shown off was a new video editing app called Movie Moments.   Expect new charms, such as one that will let you seamlessly switch between audio and video.

What not to expect.

It probably won’t replace Windows Phone 8 since Microsoft has decided to take the opposite path as Apple.  Apple currently uses the same operating system for its tablets and phones.  It probably won’t replace Windows RT.  RT runs on low power processors in order to increase battery life.  Blue would ruin that aspect.

The rumor mill is saying that Windows Blue will come out sometime this year.  We’ll be keeping an eye out.