--- layout: fc_discuss_archives title: Message 35 from Frama-C-discuss on October 2011 ---
A new release of Why, version 2.30, is available. Main new feature: the default behavior for the Krakatoa front-end (for Java source code) and for the Jessie plugin of Frama-C (for C source code) is to call the Why3 VC generator as back-end, and then the Why3 graphical interface. This means that Why should now be install conjointly with Why3. The possibility of calling the former Why generator remains, but is not recommended for two main reasons: first the Why VC generator is not maintained anymore, and second there are many nice new features in Why3 that you should use: more theorem provers, a proof session system that stores the result of your proof runs, etc. See the page http://krakatoa.lri.fr for detailed informations. Of course, the version of the Jessie plugin is compatible with the current Frama-C version "Nitrogen" For other changes, see the file CHANGES in the distribution. - Claude, for the Why and Why3 development teams