nowadays for HMV Japan's case , if a certain single/album has a 1st press bonus item , they will state as so & also after when they don't have it anymore
like eg. ->
http://www.hmv.co.jp/en/product/detail.asp?sku=3910014
HMV Japan had a bad habit of not doing that in the past so there was that uncertainity looming around but things are done by them much better now