You can write a press release -- it's good practice -- but the chances of it being picked up by anything other than your hometown newspaper are slim to none. If your hometown newspaper is the New York Times or the Chicago Tribune, the chances it'll print your release are zero.
There are services that -- for a price -- will distribute your press release to a zillion places. They usually won't tell you how many places will actually print them because the answer is usually a very small number.
There are services that -- for a price -- will distribute your press release to a zillion places. They usually won't tell you how many places will actually print them because the answer is usually a very small number.