SlashGear mentioned early this morning that there was word that Microsoft would be purchasing Skype and that the official announcement was to be made this morning. That official announcement has just landed. Microsoft has officially said that it will be acquiring Skype, and the deal is very far from cheap for Redmond. The purchase of Skype will cost Microsoft $8.5 billion in cash. The cash for the purchase comes from an investor group led by Silver Lake. The boards of both Microsoft and Skype have agreed to the purchase.