Any idea when/if a battery only doorbell will be made available?

I accidentally ordered a doorbell thinking it was battery operated or had the option. I just moved into a new house and there is no doorbell, so for folks like me it is quite expensive to have someone come out and drill through concrete and setup electrical just for something like what ring doorbell has. I really would prefer to get something from SimpliSafe so it is fully integrated, vs. buying a ring. 

Are there any plans for this?