Nokia 5800 XpressMusic will be updated?

On the site the American Federal Communications Commission (FCC) has information on an updated version of the mobile phone Nokia 5800 XpressMusic, which is added to the index letter "i", while the inner code has changed to RM-602.

However, these documents do not indicate how the original model was subjected to updates and what are the specific "injection" is changed from it. The only thing you can say about the changes to have photographs, it is the presence of other optics, from which you can make the assumption of a new image sensor, the resolution of which has not changed ...