Get your taxes done using TurboTax

You may still file jointly. Since your wife is still not a resident, you will need to indicate that she is a non resident that you wish to treat as a resident for tax filing purposes.  Unlike previous years, there is a statement attached to your return reporting you are making this choice. I will include a screenshot below where you will make this choice.

Remember, to be treated as a resident for tax filing purposes, both of you must include your worldwide income on your return.  Here is the screenshot I mentioned above.