Sony Ericsson have released the SDK for the upcoming Xperia X1 Smartphone. You may be a bit confused, because as all you savvy readers will know the Xperia X1 is operating on the Windows Mobile platform. An already strong platform which is enjoyed by mobile phone users around the world.

This SDK however is a free download from Sony Ericsson which will allow you to customize your Xperia X1 with whatever panels you please. The panels interface is similar to Apple’s iPhone Apps store and it will allow you to tailor your phone to however you want to use it. It is meant to make phone usage a much more interactive experience and allow users to customize and move through their phone more freely.

The video below gives us a short demo of what we’ll be able to expect when this gorgeous handset gets released. As you can see it is likely to have panels specifically for certain providers so you can configure your phone easily and quickly.

We will have to see how this stacks up to the Samsung i900 Omnia and Apple iPhone 3G interfaces. Do you have a preference?