This question already has an answer here:
I just found out that it is not possible to upgrade TeXLive from 2012 to 2013 versions so you'll have to do a new install of TeXLive 2013.
Does anyone know if the upgrading feature will be available for TeXLive 2013? That is, will it be possible to upgrade TL 2013 to TL 2014? Otherwise it'll be a pain installing it and uninstalling it everytime I need a new package in the old version.