Most topics about the Arcane bond ability (with object)were created during Alpha. At that time there was confusion about the 1/4 creation cost of the item and the enchanting part (could you enchant a ring before 12th level).
The design leader explicitly stated that you couldn't enchant the bonded item if the required feat required a higher level than your current.
In the beta version, possible loopholes with creating bonded items for 1/4 cost and then selling them have been removed. (they simply cannot be sold now).
But it's still unclear whether you need to be of a certain level to be able to enchant your ring or staff (or amulet even, but that's not really a problem since wondrous item is a 3rd lvl feat).
I am missing a line like
"A wizard can enchant his bonded object as if he had the required feats as long as the wizard meets the level restriction of the feat" or something.
Does this mean you really can simply enchant your bonded item regardless of level? And was it really necessary to remove the 1/2 cost bonus? I kinda liked that ;-)