The Plaid newsletter for October 2021 highlights several key updates, including the launch of a new endpoint for recurring transactions, an updated Account Select pane for Link, and a new security questionnaire in the developer Dashboard to facilitate OAuth migrations. A virtual conference, Plaid Forum, is also taking place on October 13-14, featuring discussions on new products and ideas powering digital financial services. Additionally, there are updates on embedded finance, including a webinar on November 3, and reminders to upgrade to the latest mobile SDKs by September 1, 2022.