Not sure you are asking the right question. Everyone has been preparing and filing 2018 tax returns. The filing deadline for 2018 tax returns was April 15, 2019. If you are getting a refund there is not a penalty for missing the deadline and you can still get your refund for three years. If you owe tax due then you are subject to penalties/interest for missing the April filing deadline. The current online software is for 2018 returns.
2019 tax returns will not be filed until 2020, when the 2019 tax year is over.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**