You can download this Hotfix from TIBCO Support Portal (https://support.tibco.com).  You will need to provide your TIBCO Support Portal credentials.  
Once logged in you can download the hotfix by selecting the “Downloads” -> “Hotfixes” option, then navigate to /AvailableDownloads/BusinessEvents/EnterpriseEdition/5.5.0/hotfix-06 to download the Hotfix.

Alternatively, you can use the direct portal link to download Hotfix-06

https://support.tibco.com/s/hotfixes?id=a011a00000HK75oAAD
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Closed Issues in 5.5.0_HF-006 (This Release)

BE-26700
In TIBCO BusinessEvents WebStudio, in some cases, the class files were not
generated but the hot deployment was successful by using old class files.

BE-26686
In TIBCO BusinessEvents WebStudio (old UI), the business rule was eligible for
commit operation even without any update to it.

BE-26682
TIBCO BusinessEvents WebStudio (new UI) was displaying an
ExpressionChangedAfterItHasBeenCheckedError error when you click business rule
multiple times.

BE-26672
Concepts, with a huge number of properties, were not loaded when the Persistence
Option was set to Shared Nothing.

BE-26671
In TIBCO BusinessEvents Studio, the EAR generation utility was not validating
the containment relationship rule. The EAR was generated successfully even if
the concept was contained by multiple concepts.

BE-26666
You could not set the timeout for the query execution.
Now, an optional timeout parameter has been added to executeInQuerySession and
executeInDynamicQuerySession catalog functions.

BE-26652
In TIBCO BusinessEvents WebStudio, the BuildAndDeploy option was not compiling
the classes when the <ProjectName>.<EnvironmentName>.ws.jmx.hotDeploy.enable
property was set to false in the RMS.cdd file.

BE-26626
There was no docker support for TIBCO BusinessEvents on the Windows Server 2016
platform.

BE-26582
In TIBCO BusinessEvents Studio, the "Include Event Type" property was not
working properly when set to "Never".

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TIBCO BusinessEvents Enterprise Edition 5.5.0 Hotfix-06 is available

All Supported Platforms

Please refer to attached hotfix readme file for installation instructions, affected files and list of fixes in this release.