Thanks for confirming that.
According to Tesla's
Emergency Responder guides the method to open the frunk without power varies depending on the model year. Looks like my 70D is just a couple weeks newer than yours - according the the guide for 2015 D Model S, you can pry open the nosecone and access 2 release levers to open the frunk. (This is different than the recently publicized hidden cable release in the front wheel well for refresh Model S)