This coming Monday, December 5, 2016.
See full details here: http://plugintolinux.ca/node/410
Thanks to Mike for doing a great presentation of the new features in Fedora 25 and a side-tutorial of how LVM works. Well done!
It turns out there is a GUI for LVM (or at least was, the article is from 2012):
http://www.howtogeek.com/127246/linux-sysadmin-how-to-manage-lvms-with-a-gui/