thank you for contacting us.
Currently, when a new version of the iink SDK is released, we recommend to upgrade everything, i.e. assets, libraries... indeed, new assets may be necessary to fully get the best of the new features.
In your case, do you have a use-case where you cannot afford to update the resources?
normally, most of the time, when a minor release is provided, older resources are likely to be compatible.
Nevertheless, even a minor release may solve a bug in the resources ; you then understand we always recommend all assets are updated when a new release is done.
On my side, I am still not catching your use-case? Are you providing resources on a server, and it is difficult for you to maitain oler releases?