"Lucid Lynx" is the code name for Ubuntu 10.04, scheduled for release in April 2010. See the Lucid release schedule.
See also the Ubuntu Developer Summit for Lucid, which will take place from November 19th to 22nd, 2009.
And check the technical overview for the latest update link and technical information about Lucid.
Bugs in Lucid
It should come as no surprise that the alpha release of Lucid Lynx contains bugs. Your comments, bug reports, patches and suggestions will help fix bugs and improve future releases. Please report bugs per the instructions on ReportingBugs.
If you want to help out with bugs, the Ubuntu Bug Squad is always looking for help.
If you would like to help shape Ubuntu, please take a look at the Ubuntu Get Involved page.
To have future Ubuntu development announcements emailed to you, please go to the ubuntu-devel-announce page and subscribe with your email address.
To have future Ubuntu package updates emailed to you, please go to the lucid-changes page and subscribe with your email address.