The AAMC has opened up one last batch of additional seats for the January administration of the current MCAT. This will likely be the last time that seats are added before the rollout of the new MCAT2015. Seats were added in several cities, including Seattle. (But not Portland, unfortunately.) See the link below for more information.
https://www.aamc.org/students/applying/mcat/409474/mcatseats.html