Instead, be open with personnel about both good and bad news. DON'T deny that change will come, or minimize it to employees. Some changes will be made, even if new management sincerely desires not to do so. Employees intuitively understand this. DON'T make unnecessary changes.
Necessary change is difficult for many people under the best of circumstances.
Unnecessary changes will fuel skepticism about needed changes, and make employees less receptive to them. DON'T dawdle about making changes. Prolonging a period of change increases anxiety. Announce changes with as much notice as possible, then stick to the timetable. DON'T ignore employee advice once you've asked for it.