For what it's worth, I'm seeing the same.
> Marina Vatkina <mailto:marina.vatkina_at_oracle.com>
> January 22, 2013 3:02 PM
> I've updated my workspace today and the build is failing with:
>
> [ERROR] Failed to execute goal on project glassfish-jpa: Could not
> resolve dependencies for project
> org.glassfish.main.packager:glassfish-jpa:distribution-fragment:4.0-SNAPSHOT:
> The following artifacts could not be resolved:
> org.eclipse.persistence:org.eclipse.persistence.core:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.jpa:jar:2.5.0-M6,
> org.eclipse.persistence:javax.persistence:jar:2.0.105.v201212201717,
> org.eclipse.persistence:org.eclipse.persistence.jpa.jpql:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.jpa.modelgen:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.jpa.modelgen.processor:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.moxy:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.dbws:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.oracle:jar:2.5.0-M6,
> org.eclipse.persistence:org.eclipse.persistence.antlr:jar:3.2.0.v201206041011,
> org.eclipse.persistence:org.eclipse.persistence.asm:jar:3.3.1.v201206041142:
> Could not find artifact
> org.eclipse.persistence:org.eclipse.persistence.core:jar:2.5.0-M6 in
> mjn (https://maven.java.net/content/repositories/releases/) -> [Help 1]
>
> -marina