I don't think it's in, and no offense, but I hope it isn't - I hate pixel-hunting!
I also wouldn't see how even a player with a Perception of 5, who can clearly see a large area of the surrounding environment, wouldn't also be able to see items lying about.
Anyway, I'm planning to update the "UI Wishlist" forum thread after messing around with the new update a bit more, as it still seems that "ALT" highlights most items, but not all - so maybe that's the reason for the confusion here.
