Yes. Can you believe it.Alpha and Beta versions are scheduled to come out all by the end of June. In July is when you can download . A month after that will no longer be supported and next year will “reach end of life”, which I assume means will no longer be supported.
The planned milestones are:
05 June –
10 June – Feature freeze to prepare for beta release
13 June – beta 1 to be released for public testing
27 June – Joomla beta 2 to be released for public testing
4 July – Version 11.1 of the Joomla Platform to be released
10 July – Joomla 1.7 GA released
10 August – reaches end of life and is no longer supported
January 2012 – Next version of Joomla is released
April 2012 – reaches end of life
Read more about the changes at Joomla.org.