Errea haven't announced it yet. Their launch has evidently been filmed, and someone has leaked the photo.
No official announcement has been made by either side, and I'm sure the Albion will be chuffed to bits that their thunder has been stolen.
Why? They'll never be worn together. Navy looks much better. I'm waiting with interest to see exactly what shade of yellow the shirt is though, as you can't always tell from these things.