From the ACCC link...

Under the new standards products must have secure battery compartments to prevent children accessing the batteries. Button batteries must be supplied in child-resistant packaging. Products and batteries must have additional warnings and emergency advice on the batteries, packaging and instructions. Suppliers must also ensure products have been compliance tested.

All levels of the supply chain are legally required to comply with the mandatory standards and the ACCC will be working with state and territory regulators to monitor compliance and take enforcement action when necessary.

“Inspectors will be out looking for unsafe products both online and in stores such as discount retailers, variety shops, major retailers, pharmacies, newsagents and at large events,” Ms Rickard said.
I think Hasbro/TakaraTomy Transformers should be fine, as they have been securing battery compartments with screws for a long time now. And I think they have always had screws for the button cell batteries (the bigger batteries haven't always had the compartment screwed down).
We might just see some extra information included in the packaging for emergency advice.
Considering these laws were passed 18 months ago and June 22nd was when they were fully in force, Hasbro would have instigated necessary changes by now.