WHD is the underlying driver used for all of our ModusToolbox SDKs. It will continue to be well supported across our radio/PSoC 6 portfolio.
As such, all new RTOS based development will leverage WHD.
WWD used within WICED will remain maintenance mode and new non-Cypress MCU implementations will be evaluated on a case by case basis and move to that vendors development tool environment using WHD as the driver.
Please reach out to your local Cypress sales team for details as we cannot publish detailed roadmaps here on the community, only high level guidance as I've provided above.