For those who are wondering, not sure how I missed it in all my searches but I found my answer here:
Data Service Versioning (WCF Data Services)
Entity property changes.
Requires a new version:
- Remove existing property or relationship
- Add non-nullable property
- Change existing property
New version not needed:
With the additional note:
You can set the IgnoreMissingProperties
property to true to have the
client ignore any new properties sent by the data service that are not
defined on the client. However, when inserts are made, the properties
not included by the client in the POST request are set to their
default values. For updates, any existing data in a property unknown
to the client might be overwritten with default values. In this case,
you should send the update as a MERGE request, which is the default.
For more information, see Managing the Data Service Context (WCF Data
Services).
So provided you only add nullable properties you don't need to be concerned with versioning complications with your WCF Data Service.