Line 5 is titled Date of Death. If any individual listed at the top of the IT-40 dies during 2018, enter date of death (MM,YY)
Turbo Tax puts in 2018. So it's not in the format specified and should be blank being I'm still alive. Please fix ASAP.
Schedule 7 is actually pre-filled by IN with that information (2018). If a taxpayer were to have died during the year, then the month and day would be added to the 2018.
You can see it on a blank Schedule 7 that you can download from the IN website - scroll down and download the pdf of Schedule 7 or see attached screenshot