The $5 monthly DoorDash restaurant credit becomes a $15 monthly credit usable on any DoorDash order, including grocery and retail. The two $10 monthly non-restaurant promos and the complimentary DashPass membership are unchanged, taking the monthly DoorDash package from $25 to $35 ($300 to $420 a year). Reported to apply to Sapphire Reserve for Business as well, though Chase has not confirmed how it works for employee cards.
Live figures on the Sapphire Reserve page always reflect what's true today — announced changes are flagged here, never silently pre-applied. Source: issuer / reporting.