If you can help or wish to become one of the maintainers - just start helping. You can find more RVM related projects at RVM Github organization.
Using RVM with EngineYard AppCloud
is a deployment platform for running rails application on a scalable architecture.
EngineYard provides a managed environment of pre-configured instances setup to run rails applications and does not currently provide a mechanism for running RVM on those instances. However RVM remains a useful tool for managing development machines and making sure that development and test environments match the environment on AppCloud instances.
You can follow changes to the AppCloud stack on Twitter: