It contains Glen's bicep bands fix but it doesn't contain a custom aiact.viv file (in fact, you're likely to run into problems if you do try to use a custom aiact.viv file with the rosters since it was designed with the default) or a sim engine fix. However, it will use any sim engine fix (and try to use any custom aiact) you already have in place so you don't need to worry about putting those back in, they don't get overwritten by the update.
