Yesterday, Microsoft announced that the Power BI Public Preview is now available worldwide. Until now only US based users could access the preview. Not anymore, so you can checked out all the great new stuff right now on http://www.powerbi.com.
See http://blogs.msdn.com/b/powerbi/archive/2015/03/16/power-bi-preview-now-available-worldwide.aspx
Happy Power BI-ing!