From Runescape.com

Members may now enchant your rings.
Just use the enchanting spells which you used on your amulets to give your rings the following exciting new abilitys.

lvl 7 - Enchanted Sapphire Ring - Ring of Recoil


Deals 10% of the damage inflicted on the wearer back at their attacker. (After 40 damage has been dealt in this way the Ring is destroyed.)
lvl 27 - Enchanted Emerald Ring - Ring of Dueling


When activated it teleports the wearer to the Duel Arena. (8 uses and then the Ring is destroyed, has the same restrictions as the teleport spells ie doesn't work past level 20 wilderness etc)
lvl 49 - Enchanted Ruby Ring - Ring of Forging


Increases the chance of succesfully smelting Iron Ore. (100% success rate, 140 uses.)
lvl 57 - Enchanted Diamond Ring - Ring of Life


When the wearer takes damage which causes their hits to falls below 10%, but which doesn't actually kill them, they are automatically teleported to Lumbridge and the ring is destroyed. (Has the same restrictions as the amulet of glory teleports ie doesn't work past level 30 wilderness, doesn't work in the duelling arena etc)
lvl 68 - Enchanted Dragonstone Ring - Ring of Wealth


The wearer has a greater chance of getting a rare item drop when they kill a monster.

Other changes
Many players commented that stringing bows gave less than half the xp that it did in Runescape classic. We have now changed this so stringing bows now gives the same xp that it used to.

We have also put in the warning to players when entering the widerness