The new WebLogic Server 12.2.1 release continues down the the path of providing an installation that is smaller to download and able to be installed with a single operation, providing a quicker approach for developers to get started with the product.
New with the WebLogic Server 12.2.1 release is the use of the quick installer technology which packages the product into an executable jar file, which will silently install the product into a target directory. Through the use of the quick installer, the installed product can now be patched using the standard Oracle patching utility - opatch - enabling developers to download and apply any patches as needed and to also enable a high degree of consistency with downstream testing and production environments.
Despite it's smaller distribution size the developer distribution delivers a full featured WebLogic Server including the rich administration console, the comprehensive scripting environment with WLST, the Configuration Wizard and Domain Builders, the Maven plugins and artifacts and of course all the new WebLogic Server features such as Java EE 7 support, MultiTenancy, Elastic Dynamic Clusters and more.
For a quick look at using the new developer distribution, creating a domain and accessing the administration console, check out the YouTube video: Getting Started with the Developer Distribution.