Yes, I just filed mine, however efile for tax year 2018 has closed as of 10-15-18 so according to the IRS and turbotax, you'll need to file by mail.
Online tax preparation has shut down for 2018 returns, and e-filing is closed except for a 2018 return that was rejected on 10-15-19. If your return was rejected on 10-15 you can still fix it today and e-file it. Otherwise, print, sign and mail it. And before it is too late, save it as a tax file and a pdf.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.
Every year, before mid-October, print a copy of your current year tax return and save it as a tax file and pdf, too. That way you will have it when you need it for school, a loan, next year’s tax return, etc. without going through a lot of aggravation (and expense) to get it.
https://ttlc.intuit.com/questions/1912544-how-do-i-save-my-2018-turbotax-online-return-as-a-pdf