Download the latest AdColony sdk:https://github.com/AdColony/AdColony-Android-SDK-3, copy the library jar file to plugins folder, Plugins\AdColony\lib\Android, name it adcolony-3.1.0.jar and then at AdColony_APL.xml file change this line:
<copyFile src="$S(PluginDir)/../../lib/Android/adcolony-3.0.4.jar" dst="$S(BuildDir)/libs/adcolony-3.0.4.jar" />
<copyFile src="$S(PluginDir)/../../lib/Android/adcolony-3.1.0.jar" dst="$S(BuildDir)/libs/adcolony-3.1.0.jar" />
The ad orientation is shown by default as landscape and with the previous proguard additions, shipping builds working too, check my previous post.