Although not yet officially confirmed, we have word that parking fees are set to increase tomorrow, March 30 2014.
The last increase was in June 2013 which saw a $1 rise to the current $15 parking fee. Tomorrow's increase will take the cost of parking a car at one of Walt Disney World's parking lots to $17, a $2 rise.
Many guests do not pay parking fees, as resort guests automatically get complimentary parking. Most annual passholders also receive free parking as part of their pass benefits. Offsite guests using single or multi-day tickets will mostly be impacted by the rise.