Forecasting for future items

Our sales team enters forecast for items that may not exist yet in JDE.  What is the best method for handling this issue?  Our process for forecasting consists of entering a sales forecast that is then revised to enter the planning forecast.  Sales wants to be able to pull a report based on sales forecast to the planned forecast so the information is entered into the same forecasting table just using different forecast types.  Planning does not plan to the future items until a BOM is created.

Would appreciate any thoughts.

Amy