With the constant delays in Windows NT 5.0, a much-anticipated update for Windows NT 4.0 has seemingly been cast to the side. Service Pack 4 for Windows NT 4.0, which was supposed to ship by the end of July, has been officially delayed until 30 days after Windows NT 5.0 Beta 2 ships. This places it in late September, assuming the NT 5.0 Beta 2 release doesn't slip again.

Microsoft began beta testing NT 4.0 Service Pack 4 back in April. It will include all of the fixes from previous service packs as well as the numerous post-SP3 hot-fixes. Some features that will be included in SP4, such as a new security manager, were originally slated for introduction with NT 5.0.

"We have a number of people working on Beta 2 who would normally have been working on the service pack," said Jonathan Perera, lead product manager for Windows NT Server. He said that users should expect Service Pack 4 within 30 days of the shipment of NT 5.0 or "probably sooner.