Ubuntu 13.04 users can expect to find Gnome 3.6 as the default desktop, and not the newer 3.8. But rumour suggests that users can still get their hands on Gnome 3.8 if they desire. Installation instructions are included for those that are ready for a change.
Note: After testing I found that it is actually 3.79.x that can be installed. Many of the same features are available, including classic desktop.
Gnome 3.8 Installation Instructions
Begin installing Gnome 3.8 using the installation instructions found here.
Add The Gnome 3.8 PPA
Users that want to try Gnome 3.8 on Ubuntu 12.10 or 13.04 are still able to do so using the gnome3-team PPA. This is done using the commands seen below.
$ sudo add-apt-repository ppa:gnome3-team/gnome3
Update Your System
Now you should update your package sources list which will make the new packages visible.
$ sudo apt-get update
After updating your sources, you should upgrade all of the packages installed on your system.
$ sudo apt-get upgrade
Begin Installing Gnome 3.8
You can now start the Gnome 3.8 installation with the following commands.
$ sudo apt-get install gnome-shell
Gnome Shell Extensions
If you want to try the new Gnome Classic you can using the commands below. When finished logout and select Gnome Classic as your default session.
$ sudo apt-get install gnome-shell-extensions
Login To Your New Session
When the installation is complete, users should logout. You can then select the Gnome Shell as your default session, and log back in.
Other Important Gnome News
Be sure to take a better look at all the goodies Gnome 3.8 brings to the table.
Ubuntu Gnome Gains Official Status Recognition
Ubuntu Gnome is now recognized as an official Ubuntu flavor with 13.04 being the first formal release. Install Ubuntu Gnome to get Gnome Shell as the default desktop, along with the full Gnome application list. This release offers 32 bit and 64 bit installation images, and the full list of Gnome applications. If you want to learn more, we have you covered.
Gnome 3.8 Complete Desktop Review
Do you want to see More? We have tested out many of the new features, and we can point out the best ones for you to take advantage of. Be sure to take a look at the full review to get a closer look at Gnome 3.8