IBM is expected to introduce low-end models in both the 9370 and the System 36 line this month. The bot-tom end 9370, expected to be a slugged version of the 9373 Model 20, is seen as making the Model 20 a more serious machine by comparison, rather as the 3083C model did for the bigger 308X machines at the end of the life of that line. Such low-end models seldom remain long in the product line. The new System 36, dubbed the 5363 and expected on October 20 or 27, is seen as a re-engineered replacement for the 5364 Sys-tem 36 Personal Computer, and is expected to have the PC-DOS processor integrated rather than stuck on the side. It will come with 200Mb or 400Mb Winchester and sell for a bargain-basement price of less than $20,000. In the US it is expected to go primarily through the value-added dealers that sell the System 36 Personal rather than value-added resellers.