Well, if it were solely legal reasons why the drummer had not been named, meaning all the t's were not
crossed and i's not dotted, it would be very risky for DT to have the drummer come in and record
because there is always an outside chance the deal could fall through. Also, it would be risky for the
new drummer as well. He could have wasted all that time and if the deal fell thorugh he may not be
compensated. So I'm guessing it's probably more than just legal reasons and more likely DT wants to
TIME the announcement with something important like a single, or who knows what.
But yes indeed, 99% of the time it's much more logical and easier to lay the drum tracks down first.
I'm just GUESSING but I believe the drums are laid down, the legalities are finalized and DT is just
waiting for the perfect timing to make the announcement.