The emacs-bbdb package installs an info manual, but it is useless. It doesn't contain the actual manual, just some sample text.
You are right. I suppose it happened in the upgrade to BBDB 3; 2.35 did include a useful manual. I'll investigate a bit further.
emacs-bbdb-3.1.2-3.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/emacs-bbdb-3.1.2-3.fc22
Fixing the manual obviously is on the todo-list for the project. Until it contains something useful, I'll simply remove it from the package.
emacs-bbdb-3.1.2-3.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/emacs-bbdb-3.1.2-3.fc21
Package emacs-bbdb-3.1.2-3.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing emacs-bbdb-3.1.2-3.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-2805/emacs-bbdb-3.1.2-3.fc21 then log in and leave karma (feedback).
emacs-bbdb-3.1.2-3.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
emacs-bbdb-3.1.2-3.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.