just now and got kirby-nightly-2.0.7-20150226163831.zip
I assume your consent to the value entered in the panel content to be displayed on the website and not the year of the last change in the content data directory.
To correct your demo content, you can change in the file “\site\templates\project.php” line 8 from
The webpage shows “2015” for all of the three projekts in the website e.g. at “/projects/project-c”, where they show 2012, 2013 and 2014 within the panel.