Ubuntu will release 9.04 in three days. I will upgrade my Ubuntu box when it is really released.
Now I would like to go through the ne features of Ubuntu 9.04
Ubuntu 9.04 includes the latest GNOME 2.26 desktop environment.
All in one CD-burning application. It is default.
gnome-display-properties has new features to support multi-monitors.
X.Org server 1.6
It has better 2D 3D support on ATI video card. Intel card is also supported well.
This is very important when competed with Windows Vista or XP, or even Windows 7.
Ext4 filesystem support
Ext4 is an option on Ubuntu 9.04. Ext3 is still default file system, but Ext 4 may be the default in the next version.
I heard this information about boot time on SSD drive with Ubuntu 9.04 is only 17.5 seconds. via Matt.
Later, Matt added that it can be boot in 9 seconds.
I will try to install Ubuntu 9.04 on my Netbook Acer Aspire One.