Can you explain in some more detail about the marketplace model that will be put in place? Will it be a commission based model for example?

There is no fee for submitting and listing products or services in Magento Marketplace. All product sales in the Magento Marketplace are subject to a 70/30 revenue share split, with 70% of the revenue going to the provider and 30% going to Magento. This shift to a new business model will allow Magento to continue to invest in marketing Magento Marketplace and increase extension providers’ app business.