Hi,

WD 4.5.7 Beta 2 is now available. This version will probably be the official release early next year.
New in beta 2:
All plugins that allow "Dynamic Naming" now have the option to "modify" the timestamps for date/time related dynamic names.
Copied from the english helpfile:

     It is also possible to do some limited arithmetic on these date/times.
     Suppose you want to use the last-modified date as a dynamic name, for example
     D:\TargetDirectory\{year:lm}-{month:lm}-{day:lm}\{filename}
     However, you want to "add 1 day" to this timestamp. You can do this by entering the following "date modifier" somewhere:
     {lm:+1d}
     so it becomes
     D:\TargetDirectory\{lm:+1d}{year:lm}-{month:lm}-{day:lm}\{filename}
     
     This will add 1 day to the last-modified date. You can also add or subtract hours ({lm:+22h}) minutes ({lm:+10m}) and seconds ({lm:+10s}).
     You can combine multiple date modifiers, for example
     {lm:+1d-30h-2m+4s}
     This will add 1 day, subtract 30 hours, subtract 2 minutes and finally adds 4 seconds.
     
     To change the "System Date/Time", use {cu:+1d} (cu = current)
     To change the "Last Modified Date/Time", use {lm:+1d}
     To change the "Last Accessed Date/Time", use {la:+1d}
     To change the "Creation Date/Time", use {cr:+1d}

You can download the new beta here:
this version is now released