Having tested the new version of the jfrog plugin for a fix to the need for admin privileged artifactory credentials when retrieving an artifact, I can see no change in behavior over previous versions of the action pack. The nolio_all.log file on the agent running the "JFrog - Retrieve Artifact" action still indicates that prior to actually attempting to download the specified artifact, a directory listing api call is made to artifactory that does require higher privileges than is necessary to download a specific artifact.

When tested, this action produces the following log entries:
2016-06-03 09:23:42,882 [job-66151-jobServer-66274-6:JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] DEBUG (com.nolio.platform.shared.executables.actions.jfrog.RetrieveArtifactAction:184) - repository check URL :: http://<ip address>:8081/artifactory/api/repositories/ext
2016-06-03 09:23:42,882 [job-66151-jobServer-66274-6:JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] DEBUG (com.nolio.platform.shared.executables.actions.jfrog.utils.Utils:430) - username :: ***************
2016-06-03 09:23:42,913 [job-66151-jobServer-66274-6:JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] DEBUG (com.nolio.platform.shared.executables.actions.jfrog.RetrieveArtifactAction:189) - repositoryResponse :: HTTP/1.1 401 Unauthorized
2016-06-03 09:23:42,913 [job-66151-jobServer-66274-6:JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] DEBUG (com.nolio.platform.shared.executables.actions.jfrog.RetrieveArtifactAction:236) - Error in validating repository
2016-06-03 09:23:42,913 [job-66151-jobServer-66274-6:JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] INFO (com.nolio.platform.shared.datamodel.Action:334) - ------------------------Finished action [JFrog - Retrieve Artifacts(P877.F16246.E16247):JFrog - Retrieve Artifacts] result [false, There is an error while fetching Repository details. Please refer logs.]------------------------
Having upgraded the jfrog action pack prior to this test, I have the following jfrog related jars in the agent's actionslib directory:
6/2/2016 6:10 PM 0 nolio-jfrog-actions-10.8.1505.1.jar
6/2/2016 6:10 PM 213707 nolio-jfrog-actions-10.8.1506.1.jar
So, the same question remains for version 1506.1 as we had with 1505.1 with respect to the "JFrog - Retrieve Artifacts" action... why is an api call that requires admin privileges being run as a repo check prior to a artifact retrieval that requires no authentication at all?