Hey Rory, I downloaded b41 and ran wildfly-core testsuite with it http://teamcity.cafe-babe.org/viewLog.html?buildId=10518&buildTypeId=... and it looks great, two tests failing need fixing on our side to account for no more PermGen in Sun/Oracle jdk. -- tomaz On Tue, Dec 9, 2014 at 9:41 AM, Rory O'Donnell <rory.odonnell(a)oracle.com <mailto:rory.odonnell@oracle.com>> wrote: Hi Jason/Tomaz, The initial changesets for JEP 220: Modular Run-Time Images [1] are available with JDK 9 early-access build 41 [2]. To summarize (please see the JEP for details): - The "jre" subdirectory is no longer present in JDK images. - The user-editable configuration files in the "lib" subdirectory have been moved to the new "conf" directory. - The endorsed-standards override mechanism has been removed. - The extension mechanism has been removed. - rt.jar, tools.jar, and dt.jar have been removed. - A new URI scheme for naming stored modules, classes, and resources has been defined. - For tools that previously accessed rt.jar directly, a built-in NIO file-system provider has been defined to provide access to the class and resource files within a run-time image. More details are available at Mark Reinhold's latest blog entry [3] Rgds, Rory [1] http://openjdk.java.net/jeps/220 [2] https://jdk9.java.net/download/ [3] http://mreinhold.org/blog/jigsaw-modular-images -- Rgds,Rory O'Donnell Quality Engineering Manager Oracle EMEA , Dublin, Ireland