Microsoft Corp has cut the price of NT 4.0 Workstation licenses by 58%, to $99 and will let small and medium businesses take up the offer to upgrade to NT 5.0 for $38 per license at any time over the next two years. NT 5.0 has already been delayed substantially and, according to some industry observers, could be delayed until mid-2000, a setback that will batter Microsoft’s revenues unless it manages to ship more NT 4.0 in its place. Price cuts may help sell more copies of NT4.0, but persuading customers to take 4.0, with the promise of a later cut-price upgrade of the operating system could cannibalize future NT 5.0 license sales.