As we could read on GNOME‘s website improvements were made:

• Big improvements to notifications, including a redesigned Message Tray, smarter notifications, and other tweaks and refinements.
• An enhanced Activities Overview with an improved layout.
• A greatly enhanced Files application, with functional file search, a new Recent location, redesigned interface and lots of bug fixes and handy new features.
• Integrated Input Sources, which makes inputting different character sets (eg. Japanese or Chinese) fast and easy.
• Accessibility on demand, meaning that universal access features like the Orca screen reader can be enabled with the push of a button.
• A new Lock Screen. This provides an attractive view when the device is locked, plus handy functionality like media controls and notifications.

Still no news about GNOMEBUNTU…

Few more images from the GNOME’s website: