Your W-2 is mailed by the employer. You should notify your former employer in Michigan that you have moved, and ask them to mail your W-2 to your new address. Do it right away, because they will be sending the W-2s soon.
If they mail your W-2 to your old address, the post office should forward it since you filed a change of address with the post office. If you don't get the W-2 by the first week of February, contact the Michigan employer and ask for a duplicate copy.
