I have been using Ubuntu since 5.10 as my main operating system, and recently upgraded from 8.10 to 9.04 and here are my thoughts.
I decided to be brave and do a full format and install 9.04 with ext4 as the file-system…was this wise? time will tell but the improvements I have seen have been great…will talk about them soon.
There is not a lot of new things that jump out, but here are the ones that have
1. Loading Speeds : With using ext4 my boot times are increased and its very noticeable, I have gone from say around 18 to 22 secs to now 10 to 15secs…so far not file system issues have popped up since its new.
2. Loading Screen : The new loading screen looks very smart and for me a lot nicer.
3. Log In Screen : This again is new and for me its nice but does have a server log-in look to it…but its nice.
4. Notifications : This is very nice and I do like it, but it does have 1 bug where the icon displayed is blurry…hopefully a fix will be out soon.
I have now been using it for one week and so far, I have not noticed anything different (apart from the 4 above points) which is good…you dont want a new learning experience every 6 months (How often Ubuntu release a new OS).
Overall I am very pleased with this version, most of the issues I have had with previous clean installs or upgrades seem to be solved.
I will review 9.04 again when I have played with it a lot more.