Yes, the site logo changed. This is because site stylesheets are all brand-spanking new, and we have 15 new themes for you to choose from! More info here.
Policy Update - Rules changes incoming for AI content - Read Here

Source changes for image #1270741

ImageSourceActionTimestampUser
1270741
Size: 1280x948 | Tagged: safe, artist:hattsy, oc, oc only, oc:hattsy, clothes, collar, monochrome, sketch, socks, solo
http://anonymoushatter.tumblr.com/post/151633280390Removed Background Pony #7164
1270741
Size: 1280x948 | Tagged: safe, artist:hattsy, oc, oc only, oc:hattsy, clothes, collar, monochrome, sketch, socks, solo
http://hattsie.tumblr.com/post/151633280390Added Yoshimon1