Piwik Upgrade (no replies)

Hi ,

We are currently using piwik 2.3 and planning to upgrade to 2.10. Do we need to upgrade in stages like first to 2.4, then 2.5 etc or when i click on upgrade to 2.10 ,it will automatically apply all the upgrades

Is there a list of features for me to compare what changing from 2.3 to 2.10 ?

The only thing i find is the change log [piwik.org] so do i need to go to each change log and read them in detail?

Thanks