Following the same format as the 2004 installer, I have a 2005 installer now available over at the OOTP Download Center.
It includes:
Halofan's roster set as of 3-13-05
DraftDodger's posed photo set
My MVP Park set
My MLB Logo set
You can download it
here.
It's a 51mb file, so you'd be best off with a broadband connection to download it.
Enjoy!