Hi Jessica,
> I would like to know if/when we will be able to edit Operations Dashboard on an iPad.
This functionality is not currently available in Operations Dashboard and was by design. Configuring and editing a Dashboard, specifically when setting up the layout and enabling selectors is not optimal on a tablet form factor.
Please submit an enhancement request on the ArcGIS Ideas for Operations Dashboard so we can gauge interest in this capability from the user community.
Hope this helps,