There is a jax-rpc release now available in the JBoss Java EE API specs project:

The EJB 3.1 pom has been changed to replace the dependency:
<dependency>
<groupId>javax.xml</groupId>
<artifactId>jaxrpc-api</artifactId>
<version>1.1</version>
</dependency>

with:

<dependency>
<groupId>org.jboss.spec.javax.xml.rpc</groupId>
<artifactId>jboss-jaxrpc-api_1.1_spec</artifactId>
<version>1.0.0.Final</version>
<scope>provided</scope>
</dependency>

Therefore, a 1.0.1 release will be done for consideration of inclusion in AS 7 to minimize incorrect transitive dependencies.