updating to iOS13 problem

iOS and iPadOS

On my 7th gen iPod touch, it is not showing iOS13. It is not letting me update. It keeps saying iOS 12.4 is ythe latest. Do iPhones get the update first? I even plugged it into my RCA cambio windows 10 tablet and loaded up itunes and checked for updates and itunes says 12.4 is the latest iOS. Maybe iPod touch is the last to get iOS13? I wish I could update.