Aside from Unity, the Software Center is one of the main  areas of development in Ubuntu 11.04 Natty Narhwal. It is getting a lot of new features like support for user ratings, reviews etc. Another feature - search suggestion - has quietly landed in trunks.

The search suggestion suggests the correct package name in case the user typed the wrong spelling.

It also works with generic search terms.

And when no package of the name is found in the category chosen, it suggests searching in new categories.

This is by no means a ground shattering feature, but it is small features like this that makes it much better towards the user experience.

[source: Michael Vogt's Blog]