From Muy Windows I have been informed that the build that leaked a couple of days back is actually Milestone 2 and was in use by Microsoft back in February of this year, the current build being used by Microsoft is actually Milestone 3. From what I can tell all the images we have seen of Wave 4 have been confirmed by the images from the leaked version, I wonder what new features and enhancements have been added in Milestone 3.

From the same website I have also learned that in the latest installer for the beta version of the suite will include more applications than the leaked version, shown in the image below, including an update for Silverlight and Outlook Connector which allows for easy access to one’s Hotmail account in Outlook.

I am still being told that the beta of Wave 4 is scheduled to be released in May which is likely to be the same time that the Office Web Apps are released and perhaps when Microsoft will share more information with us about Windows Phone 7 Series.

I shall endeavour to find out more information about Wave 4 and will share with you as soon as I do.

Muy Windows has a Live Spaces account too with lots of images and info about upcoming products from Microsoft.