Hi,
Thanks for your feedback.
As you are saying, LLCE v1.0.6 is the latest LLCE release, which is using the newer RTD's. HSE lates release is not as new as LLCE v1.0.6, for which it is not using the latest RTD release.
As for a SW roadmap, we are not seeing anything on this regard, help us contacting your local NXP representative/FAE for them to verify if there is any information available.
For the Silicon revision, you should be able to see it directly on the chip (removing the heatsink with care to verify it) or by looking into the MIDR1 register of the SIUL2_0 module, as shown below:

Please, let us know.