A majority of the changes are not visible; these tweaks go along with recent updates that were made to Stack Overflow:
- We updated the site's CSS to a newly refactored LESS system, so that it's easier for us to fix SE network CSS bugs globally and launch new features in the future.
- We updated most of the graphics to SVG for retina support.
- We have fixed a LOT of obscure bugs that arose when new features were not thoroughly tested across the entire network.
- We've launching the shiny new user profile!
Visually it will "feel" the same as the old site with slight layout adjustments.
This update should retro-actively fix most of the old design bugs. Once the updates are live, I'll update this post. Then if you see any new bugs, or old ones not yet fixed, please post an answer here to let us know!