Yes, Annette, that's right.
Beta is the second letter of the Greek alphabet.
But put your Mickey Mouse ears back on and listen up. More specifically, we're going to study beta testing of next-generation Internet browsers from Microsoft and Netscape. Rivalry between the two companies has been fierce. Their latest efforts just arrived in the form of Netscape's Communicator and Microsoft's Internet Explorer 4.0. These are beta releases, which means they are still being tested.