From Stephen Ficklin on the Tripal mailing list:
Dear Tripal Community,
We are happy to announce that Tripal v1.0 is officially released!
Here are some useful links:
If you have been using the v1.0 development version you should update your version of Tripal and perform database updates (e.g. ‘drush updatedb’).
Please feel free to provide any feedback on the Tripal mailing list! Thank you to those who have done so already and have helped make Tripal better.
Posted to the GMOD News on 2013/03/08