The next major change was in late 2008 when the DSI engine was replaced by the i-vtec engine, this became the Mk2 Jazz. The engine had a bit more power but the change was a retrograde step in some peoples opinion. At the same time the CVT gearbox was replaced by the i-shift gearbox, an electrically operated manual box. This was definitely a retrograde step although some people reckoned that they liked it. In early 2011 the CVT box was reintroduced with a torque converter clutch confirming that the i-shift box wasn't popular. Throughout it's life the Jazz has had improvements to its suspension to make it more comfortable and the steering has been improved to gradually remove some of the reported notchiness that some owners complained of. There is a strong following for the model like yours, I have had two, both CVT's and liked them, there's still a lot about.
I have owned Jazz's for 14 years and have very few component failures, a front brake caliper change and a door mirror failed, anything else has been wear and tear.
Good luck.
Vic.