My New Jersey state return doesn't have a place for direct deposit information, but my TurboTax cover letter for snail mail the return says it will be direct deposited. How do I know this will happen?

If you file your state return electronically your direct deposit information will be automatically transferred.  However, if you mail your return you can not receive your refund via direct deposit in NJ. 

https://ttlc.intuit.com/replies/5777162

Thank you. So do I need to send anything else or doesnit mean a check will be mailed to me?

A check will be mailed to you.

If this is so, it must be a new rule this year. I last year mailed in NJ State tax return and got my refund by direct deposit deposit.
Also  when you print your NJ return for mailing, the Direct Deposit info will be showing.on page 3.

If you look at the NJ Form on the state website, there isn't anywhere to put the direct deposit info.

Direct Deposit information will appear on the software generated forms, page 3.

Thank you