Is there a way to set-up recurring transactions so that the service period dates are shown and change each time it's created & sent?

We send out monthly invoices for ongoing continued services. It would be helpful if each invoice could auto-fill with the month for which it covers. 

I know about the "service date" option in "sales form content" menu, but would that update each month? also, it is only one date, whereas a range would be better for this. 

Anyone have suggestions on how to do this? At the moment we include a line saying the invoice is for the service period beginning on the date of the invoice, but it would be nice to be more specific.