What I understand is that, if you are married then, you have to file as married. Please check <a href="
https://ttlc.intuit.com/questions/1925734-itin-and-fling-jointly?jump_to=comment_3393280" rel="nofollow" target="_blank">
https://ttlc.intuit.com/questions/1925734-itin-and-fling-jointly?jump_to=comment_3393280</a> with the details of filing as married and jointly, also with applying for ITIN.
Another option is to file for a tax extension till Oct 15, assuming that your wife will be in USA by then and will get SSN/ITIN and then file as married jointly.
