Yes -- you can include your W-2c information with your return using TurboTax, and you don't need to send your W-2c separately.
Please see the TurboTax FAQs below for more information.
I got a W-2c from my employer. How do I handle this?
https://ttlc.intuit.com/replies/4192512
How do I change my W-2 info in TurboTax?
