At some point in the very near future, we'll want to incorporate some "pre-release" builds of various components, plugins, and core.

From csanchez, the following pull requests would be good first versions to support.

https://github.com/jenkinsci/jenkins/pull/3302
https://github.com/jenkinsci/workflow-api-plugin/pull/67
https://github.com/jenkinsci/workflow-basic-steps-plugin/pull/60
https://github.com/jenkinsci/workflow-step-api-plugin/pull/33