So here's the low down directly from the manufacturer via phone call.
They are releasing more OneLink products that will be part of their own OneLink family e.g. thermostat, detectors etc.
They removed the name from any existing models b/c they didn't want customers to get confused about what family they were part of.
Supposedly, First Alert was supposed to only remove the name from the product/documentation, no physical changes but she could not confirm that 100%.
As such, there shouldn't have been any behavior changes with the new revision.
The woman I spoke with confirmed with a more knowledgeable colleague on all of this but neither were familiar with the OneLink and Insteon relationship. Very nice and helpful but ultimately referred me to Insteon support.