The current p4-jenkins plugin depends on the 2013.2 library. I've already successfully built the plugin using 2014.1, it just isn't in maven yet.

My colleague contacted perforce directly about this and already has a stacktrace indicating issues with the older software library version: http://forums.perforce.com/index.php?/topic/3723-p4java-client-too-old-error-groovy

The main issue is that without the newer version we cannot connect to newer perforce servers which is a pretty big blocker for us right now.