No computer software is more popular than Lotus 1-2-3, the electronic spreadsheet program that has sold 5 million copies since 1984. But Lotus Development Corp.'s domination of the $600 million U.S. market for such software has been threatened by an 18-month delay in the company's production of an improved program called Release 3. When the company, based in Cambridge, Mass., finally began shipping Release 3 last week, many experts realized that the program is essentially a new product rather than a simple upgrade. Boasts Lotus chairman Jim Manzi: "There's nothing like it on earth."
The primary advance of Release 3, which...