Updates in the Trunk since the last release up to git shortlog -ns rel-0.6rc2..

git log -p rel-0.5... |grep Merge|less

PR merged since 0.6rc2:

git log -p rel-0.6rc2... |grep Merge|grep '#' |cut -f 8 -d ' ' | replace "#" "* https://github.com/Theano/Theano/pull/"

See the NEWS.txt file.