About ActiveMQ's version

What's new version on ActiveMQ?

• ActiveMQ 4.0.1 Release
• ActiveMQ 4.0.2 Release
• ActiveMQ 4.1.0 Release
• ActiveMQ 4.2.0

There are so many new versions,and the ActiveMQ's website has a facelift. I have introduced the new features about version 4.0,now I will continue on the remaining...
New Features in Apache ActiveMQ 4.1

• Shared File System Master Slave 支持主从Broker
  
• JDBC Master Slave
• Virtual Destinations
• Configure Startup Destinations可以对某个目标单独配置
• Structured Message Properties and MapMessages对象化消息属性

New Features in Apache ActiveMQ 4.2

• Blob Messages支持大消息
• Command Agent对象代理，便于监控
• Message Transformation支持消息转换

The new features caused some changes in AvticeMQ's Xml Configuration file,so you must be careful if you want to upgrade from 4.0 to 4.1.