according to the link I got from my email
http://www.amigaforever.com/whatsnew/
"New system ROMs (e.g. some versions that were unique to the Amiga 3000)"
Could be the 1.4 softboot ROMs, or Kickstarts 2.00-2.03. Good to have those archived, especially if they have the A3000 bonus code attached. If that's the case, this package will save a lot of headaches for owners with real 1.4 systems.