Hope I am not too late.
There is dried out live rock, then there is shipped dry live rock.
Dried out stuff should be rinsed then added to tank. If it is live rock that is teeming with life, but say wrapped in wet paper towels to save weight on shipping, this is a different story. In this case, if you are getting it to start a new tank, just put it in the prepared tank when it arrives. Do not rinse. Any dead stuff on the rock that did not make the trip will just aid in your cycling. If you have an established tank and just wish to add this to it, you should have a curing vat or tank. This tank would have a powerhead for circulation, some lighting, and a heater. You put your new rock in this for weeks to months to make sure all is well.