patch 1.45 fixed the agility requirements so that there once again becomes a consequence to sharpening.
prior patches had made it so that you could sharpen without (much) regard to agility - wholly unbalanced IMO.
1.45 did not change the requirements for any previously sharpened weapons however. this also seems immensely fair.
the one caveat to this is that if you took a weapon sharpened to (let's say) level 8 in patch 1.44 and it had an agility requirement of 28 - then patched to 1.45 and added a 9th level of sharpen - your weapon would now take on the characteristics of a weapon that had gone through it's sharpening life as a 1.45 weapon with a 'new' agility requirement of 56! yikes!
in other words, if your agility is not that high and you have sharpened weapons carried over from patch 1.44 (or earlier), make sure you save prior to adding any additional levels of sharpening. they will become patch 1.45 weapons when you do!
hope this helps.