The web is always changing and updating, sometimes for the better and sometimes for the worse. Good news is that Facebook finally realized the old page layout with the profile image slightly covering the cover photo was NOT a good design option. The new layout allows the profile image to sit fully left of the cover photo allowing the full image to be seen and not hidden behind the profile image. This gives designers more canvas to work with for cover image and the profile image (or company logo) doesn’t have to be designed within the cover image. This new layout solution is much better. THANK YOU Facebook!
For specific sizes for images and how they are positioned, visit https://www.facebook.com/PagesSizesDimensions/.