Looks like they've copied Firefox's download design -- which is a significant improvement. Chrome's strangely tall bottom downloads bar always confused me and seemed a waste of space.
A few times today already I forgot that was up there and some downloads had completed. It's small and out of the way but then out of mind?
It's fresh and modern feeling but I suppose it's the automatic dismissal that throws me off.
It is like things that we buy, put in storage and discover several months/years later when cleaning/moving. These are things we didn't need in the first place.