Just announced in London. The Webcast started at 8AM Eastern Time. Press release and other material by following the link.
Update: Here’s an interesting juxtaposition: eBay to buy Skype in $2.6bn deal and also just announced, Oracle to buy Siebel in deal worth $5.8 billion. Actually the Siebel deal is worth only $3.6 billion because they have $2.2 billion in cash and the Skype deal could go up to $4.1 billion based on performance.