Yes, it is likely to be the same, though you cannot in general guarantee this.
What can change is the defaults configuration for an installation; subsequent updates may not change those settings, whereas a new installation will.
A hypothetical example would be the default filesystem (an extreme example, because it isn't the sort of thing that would change after the freeze). An ext3 install will not be automatically upgraded to ext4, whereas the final install could have the default changed to ext4. Similarly, if you are running the old version of grub, updating will not automatically install grub2.
One would imagine that most configuration changes would not fall into the 'release-critical' category, so you aren't going to see major changes like the examples above between now and and the final release. But it isn't impossible.