WebSphere Application Server - Really enforcing the need to move away from Java6

I saw this whilst installing IBM BPM Advanced 8.5.7, along WebSphere Application Server (WAS) Network Deployment 8.5.5.11

/opt/ibm/InstallationManager/eclipse/tools/imcl -input /mnt/ResponseFiles/installBPM857PS.rsp -acceptLicense

Installed com.ibm.websphere.ND.v85_8.5.5011.20161206_1434 to the /opt/ibm/WebSphere/AppServer directory.
Installed com.ibm.websphere.IBMJAVA.v71_7.1.3040.20160720_1746 to the /opt/ibm/WebSphere/AppServer directory.
Installed com.ibm.bpm.ADV.v85_8.5.700201612.20161214_1824 to the /opt/ibm/WebSphere/AppServer directory.
Installed com.ibm.websphere.IHS.v85_8.5.5011.20161206_1434 to the /opt/ibm/HTTPServer directory.
Installed com.ibm.websphere.PLG.v85_8.5.5011.20161206_1434 to the /opt/ibm/WebSphere/Plugins directory.
WARNING: Your default Java SDK is Java SE 6. After April 2018, service for Java SE 6 can no longer be provided, which could expose your environment to security risks.

To stay current and reduce the risk of security exposures, update to Java SE 8 using one of the following options:
- Install WebSphere Application Server 8.5.5.11 or later with Java SE 8.
- Install the optional IBM WebSphere SDK, Java Technology Edition, Version 8 package to an existing package group that contains WebSphere Application Server Version 8.5.
- Migrate to WebSphere Application Server traditional Version 9.   

Alternatively, to use Java SE 7, install the optional IBM WebSphere SDK, Java Technology Edition, Version 7 or 7.1 package to the package group that contains WebSphere Application Server Version 8.5.

Alas, I need Java 6 or Java 7, ideally 7, as Java 8 isn't yet supported by BPM, neither is WAS 9.

Fun times ….