Hello all, I am happy to announce the immediate availability of SLF4J version 1.6.5 consisting of minor code and documentation improvements. It should hit the Maven central repository within the next 24 hours. The Simple Logging Facade for Java or (SLF4J) serves as a simple facade or abstraction for various logging frameworks, e.g. java.util.logging, log4j and logback, allowing the end user to plug in the desired logging framework at deployment time. In the absence of a binding on the classpath: In the 1.6.x series, in the absence of an SLF4J binding, slf4j-api will default to a no-operation implementation discarding all log requests. Thus, instead of throwing an exception, SLF4J will emit a single warning message about the absence of a binding and proceed to discard all log requests without further protest. In other words, libraries no longer need to bundle an slf4j binding along with slf4j-api.jar in order to function out-of-the-box. Binary compatibility: Mixing mixing different versions of slf4j-api.jar and SLF4J binding can cause problems. For example, if you are using slf4j-api-1.6.5.jar, then you should also use slf4j-simple-1.6.5.jar, using slf4j-simple-1.5.5.jar will not work. From the client's perspective all versions of slf4j-api are compatible. Client code compiled with slf4j-api-N.jar will run perfectly fine with slf4j-api-M.jar for any N and M. You only need to ensure that the version of your binding matches that of the slf4j-api.jar. You do not have to worry about the version of slf4j-api.jar used by a given dependency in your project. You can always use any version of slf4j-api.jar, and as long as the version of slf4j-api.jar and its binding match, you should be fine. At initialization time, if SLF4J suspects that there may be an api vs. binding version mismatch problem, it will emit a warning about the suspected mismatch. Release notes: Please refer to the the news page for precise details. http://www.slf4j.org/news.html You can download SLF4J, including full source code, class files and documentation on our download page, shown below. http://www.slf4j.org/download.html Announcement mailing list: You can receive SLF4J related announcements by subscribing to the SLF4J announce mailing list. To subscribe to QOS.ch announce list, please visit the following URL. http://www.qos.ch/mailman/listinfo/announce Enjoy, -- Ceki http://twitter.com/#!/ceki