Answer
June 5, 2019
It would be best to file an Extension. This would be best under the philosophy of "hoping for the best but expecting the worst". If the W-2C comes in with yet another error, you do not have grounds for not having filed on time, therefore running the risk of a Late Filing Penalty.
For instructions on preparing and filing and Extension in TurboTax please visit the FAQ below:
https://ttlc.intuit.com/replies/3301811