The FDA’s safety and performance-based pathway for 510(k) devices promises to streamline premarket filings, and the FDA’s Jason Ryans said on a recent webinar that any changes to the related product-specific guidances would be applicable only prospectively. Ryan made no mention of a grace period for impending applications, however, suggesting that any such devices may have to be reworked or resubmitted into a more conventional premarket channel if they do not meet the new requirements.