After a long delay, automated nightly builds of Ubuntu LiveCDs with TDE
R14 are now available at
http://ppa.quickbuild.pearsoncomputing.net/trinity/cdimages/ubuntu/

These LiveCDs offer a convenient way to test TDE R14 (or the current
development branch) without risk of damaging your existing installation. 
They are currently experimental, however as R14 nears release an official
LiveCD will be released from this autogenerated CD set.  Therefore, if you
want to help the offical LiveCD quality, please download the latest ISO,
test it, and report any defects to the bugtracker.

Enjoy!

Tim