Something I didn't know:

Normal: http://page4.auctions.yahoo.co.jp/jp/auction/d112684183
First release: http://page.auctions.yahoo.co.jp/jp/auction/141695825

Can't tell whether they have different album numbers... anyone have any more information on this?

Yes, I've had both.
They are the same albums.

The red one is the first press or limited edition version and the blue one is the standard one. Maybe the stickers were the only difference?

Comes with a special sticker it seems:

http://page.auctions.yahoo.co.jp/jp/auction/128485100