The event will be held in New York in Dec. 2.
The pruported invite was tweeted out by Lifewire Tech's Lance Ulanoff on Monday.
It is not usual for the iPhone maker to announce the best performing apps each December, according to MarketWatch.
Apple has held several events this year to announce new products including new Macs and services.
Apple shares added 0.2 percent in after-hours trading when the invite was released.
This follows a session that saw shares gain 0.5 percent to $267.10 and the fourth record close in six sessions.