Would they contact the preparer as his contact details are on the form as well?
I don't know the answer to that question. Perhaps guya or another professional will confirm.
I have to file this return and I don't know what to do,
Always include your most recent, and accurate, address on any return you file. The IRS will update your address. Your Social Security number is the key identifier on any IRS form. Perhaps include form 8822 with the return? Form 8822 can be found here:
https://www.irs.gov/pub/irs-pdf/f8822.pdf I can't get in touch with my preparer as it is Thanksgiving.
Unless you are up against a deadline for filing, don't panic. Wait until your preparer returns. The IRS always moves in slow and mysterious ways. Provided you have the time, waiting a week or three will not matter.
Must the forms be filed immediately?
STOP PRESS: I see you've edited your post.
When filing the form, correct the typographical error. It's still your SSN that is key for the IRS. As regards communication, unless you're expecting the IRS to disagree or question anything you've submitted, they never communicate back when a return is filed.