EPL enhancements in 5.3
Apama 5.3 includes the following EPL enhancements:

You can now use 
dictionary and 
sequence literals anywhere in an EPL program and not just in variable initializations as in previous releases. For example, the following code fragments are now valid EPL:
setMapping({"SOW":"Software AG", "MSFT":"Microsoft"});
route FooBar(true, [100.0, 1000.0, 100000.0]);

A new channel is provided. To send an event to all running Apama queries, send the event to the 
com.apama.queries channel.