2017 V 2018 DAT destroyer

Hello, Can someone inform me on the differences between the 2017 and 2018 versions of the DAT destroyer. I have the option of getting one or the other. I know of changes in the DAT in 2016 that would make a difference, but I am uncertain of any changes in 2018 vs the 2017 DAT. Thank you
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums