Currently DSC Resource Kit Wave 10 (released Feb 13, 2015, updated April 01, 2015)
Be aware that the composite resources in this resource kit are not automaticaly discovered from the puppet dsc module at types build time. If you'd like to generate a puppet type for them, you have to manually create a xxx.schema.mof file next to the xxx.schema.psm1 file.
Look at the xWordPress/DscResources/xIisWordPressSite/xIisWordPressSite.schema.mof as an example.