It seems that the wait is over. On Mach 21st Domino 9.0 will be available.
However, the announcement letter doesn't include the availability of national languages. Maybe on April 12nd.
The most controversial aspect in the announcement is that IBM Connections is not entitled with Domino 9.0 despite it is still included in the product page. I don't know if that's just a typo or a last minute change.
The official announcement, in the tomorrow event: "From Liking to Leading": Transforming Your Business with a Next Generation Platform for Social Business