http://www.kingsbounty.ru/
http://www.kingsbounty.ru/patches.php - provides patches + changelog, provided you speak russian
The second article in the official site provides 2 patches, the first one is for the CD/DVD version. However, map guardians are immobile since patch 1.0.0.2 I think. Actually, the new patch doesn't improve that much. The most notable thing is that it fixes some improper rune giveaways - there is a proper scheme to it, consisting of 5 different giveaways, although I haven't noticed a discrepancy. Other notable fixes are Battle alchemy (counter of burnt/poisoned enemies improves properly), some fixes to items and creatures and time back and trap work properly in "complicated situations" (whatever that means, I never saw a problem with it). Also AI is supposed to be better.
I doubt they're referring to the reduced rune incomes after lvl 50, because for all I read it is supposed to work that way and there are 2 ot 3 rune giveaway schemes.
EDIT: Maybe there's something to do with the no level cap. However, getting up to 60 is hard to do. The last game with Paladin on hard, I had +5% XP from lvl 3 upwards and got the +XP by digging as many chests on the battlefield as I could ASAP. I killed every enemy on the map, did every quest and still got up to lvl 55, as it was in my normal game with a warrior.
So I guess in order to get up to 60 or more, one would have to use some sort of a mod.