I am very excited about the DateHistogram. I did find, however, a small bug.
DateHistogram[List /@ RandomInteger[{2009, 2015}, 40], "Year", Frame -> True]
![enter image description here](/c/portal/getImageAttachment?filename=ScreenShot2015-07-16at23.23.46.png&userId=73716)
It can be fixed adding the options:
FrameTicks -> {{Automatic, Automatic}, {None, Automatic}}
but this should be default.