As of my last knowledge update in October 2023, the expedited processing time for LLC filings in Delaware typically allows for same-day service if the application is submitted before a certain cutoff time (usually around 3:00 PM Eastern Time) and if all paperwork is in order. If submitted after that time, it may be processed the next business day.
Delaware also offers other expedited services, such as 24-hour and 1-hour processing for additional fees. However, the specific timeframes and fees can change, so it's always a good idea to check the official Delaware Division of Corporations website or contact them directly for the most current information.