EA Sports must have thought that Cricket 2005 was a pretty good game, because not much has changed in this new version.
There are noticeable bugfixes 2005, and in fact if you turn off the commentary you eliminate 90 percent of the bugs in 2007. Jim Maxwell is gone, and Mark Nicholas takes his place and even reads from the same script. The commentary in 2007 is sporadic, buggy and bad, but in the games defense this is true of most sports games.
The biggest update to the game from 2005 is that you can re-play the ashes series that England won, and there are some scenarios for you to play through that will unlock the introductory videos that accompany each one.
The graphics are very nice and the game will run on lower end systems, even on high detail. The game runs very well on a 2.8ghz Pentium IV powered notebook with an ATI Radeon 9000 graphics chip. There are some jarring transitions in the motion captured animation which brings down the presentation.
There are 5 difficulty settings now instead of the 3 that were in '05. On the lowest setting you will be hitting every ball for six, and on the highest you will be getting caught out a lot.
Oh, and they have fixed the bowling in this version. It was really really bad in 2005, but now, for the first time ever, bowling is FUN in a Cricket game.
If you didn't like Cricket 2005 then you wont like this game either, but it does fix a lot of the problems in that game.