To upgrade or not to upgrade?
I am trying to get to grips with DS 4.0 and am trying to decide whether I should upgrade to the latest version (4.5, I believe). My concerns are
1 will my content still be findable? (I assume, yes)
2 is the interface different (ie will the little I currently understand all be blown away by new confusions?)
3 is there anything significant in 4.5 that I don't have in 4.0 that would be appreciated by a newbie like me (i.e. would the upgrade offer anything worthwhile to the non expert?