Florida is pretty much staying the same.
The political balance has stayed the same, but the make up of each electorate is changing quite a lot. The state has several major sources of potential instability - increasing minority/decreasing white electorate, immigration from other states, and finally the factor of the dying off of each successive generation of olds and their replacement by the next.
I would argue that the status we observe in the statistics above in fact represents a masking of the rapid increase in the minority (D) electorate by the die off of a relatively Democratic generation of elders (the 'Greatest Generation') and their replacement by a relatively R generation of elders (the 'Silent Generation').
The next step is the continued growth and likely continued D-trend of the Hispanics and other minorities, coupled with a die off of the Silent Generation. I think Florida will be the state to watch in 2016 and 2020, because a rapid shift due to these factors is quite possible, and obviously curtains for the Republicans if it were to happen.