We are pleased to announce the Maven Plugin Plugin 1.7-SNAPSHOT release! 

http://maven.apache.org/maven-1.x/reference/plugins/plugin/

Maven Plugin management plugin. 

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Changes in this version include:

  New Features:

o Allow plugin-test directory to be changed. Fixes MPPLUGIN-33. 
o Resolve project.xml inheritance when installing plugin. plugin:plugin goal 
  now requires at least maven 1.1 and maven-artifact-plugin 1.7. Fixes 
  MPPLUGIN-3. 
o new plugin:validate-xml tag to validate xml documents against a schema. 
o new assert:assertPluginAvailable tag to check if a minimal release of a 
  plugin is present. 

  Fixed bugs:

o NTLM Proxy Problem. Fixes MPPLUGIN-25. Thanks to Jamie McCrindle, Barrie 
  Treloar. 
o plugin:download didn't redownload SNAPSHOT plugins. Fixes MPPLUGIN-26. 

  Changes:

o Update dependencies to match ones in maven 1.1 core and to unify them 
  between plugins. The following dependencies are updated : 
  commons-jelly-tags-xml v1.0 -> v1.1 commons-logging v1.0.3 -> v1.0.4 
  jdom v b10 -> v1.0 xercesImpl v 2.4.0 -> v2.6.2 xml-apis v 1.0.b2 
  -> xmlParserAPIs v2.6.2 Fixes MAVEN-1712.  

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To automatically install the plugin, type the following on a single line:

maven plugin:download
  -Dmaven.repo.remote=http://www.ibiblio.org/maven, http://cvs.apache.org/repository/
  -DgroupId=maven
  -DartifactId=maven-plugin-plugin
  -Dversion=1.7-SNAPSHOT

For a manual installation, you can download the plugin here:
http://www.apache.org/dyn/closer.cgi/java-repository/maven/plugins/maven-plugin-plugin-1.7-SNAPSHOT.jar
 

Have fun!
-The Maven Plugin Plugin development team