I have _no_ insight into a possible release, but using the latest nightly build (April 30), it seems pretty good.
There DO seem to be some CIFS regressions, or at least some slowdowns, but very much liking the Data Lists (and included templates).
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I take it back - there are a few other issues, including a big one where existing MSOffice docs are not thumbnailed or flash-previewed. New additions work fine, but existing docs (tried a test-migration) do not render (deleting and re-adding works, so it is not a problem with the doc or with pdf2swf/imagemagick/soffice, or so it seems. Alfresco.log throws an error, but I can't tell if it is related (and probably no one wants a bug report on a nightly build).
09:32:50,081 ERROR [org.alfresco.repo.transaction.AlfrescoTransactionSupport] After completion (committed) listener exception:
listener: org.alfresco.repo.action.ActionTransactionListener@5df820aa
java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl.executeAction(AsynchronousActionExecutionQueueImpl.java:275)
at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl.executeAction(AsynchronousActionExecutionQueueImpl.java:219)
at org.alfresco.repo.action.ActionServiceImpl.queueAction(ActionServiceImpl.java:555)
at org.alfresco.repo.action.ActionServiceImpl.postCommit(ActionServiceImpl.java:542)
at org.alfresco.repo.action.ActionTransactionListener.afterCommit(ActionTransactionListener.java:77)
at org.alfresco.repo.transaction.AlfrescoTransactionSupport$TransactionSynchronizationImpl.afterCompletion(AlfrescoTransactionSupport.java:808)
at org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:394)
at org.alfresco.util.transaction.SpringAwareUserTransaction.commit(SpringAwareUserTransaction.java:472)
at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:343)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:417)
at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:434)
at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:298)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:318)
at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:177)
at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:116)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)