There won't be a Surface phone or a whole new category of device, but rather updated models in existing lines, which currently include tablets and laptops, according to a person familiar with the company's plans.

For several years Microsoft has held a pre-holiday event to show off new products, even if it's already unveiled other new Surface devices earlier in the year. July brought a new category from Microsoft -- the $399 Surface Go tablet, which is intended to complete with cheaper Apple iPads.

Apple holds its own event to introduce new iPhones Sept. 12 and Google will take the stage Oct 9.