found this on avex's Taiwan website

收錄於10/01 預定發行單曲「濱崎 步 / L」中

http://www.avex.com.tw/4th/premiere.asp?main=5&cateid=0

so far , links are not up yet to preorder L on 5music but for HMV HK's case , yeah all links are up to preorder the single

CD + DVD A - http://www.hmv.com.hk/product/japanese.asp?sku=102116

CD + DVD B - http://www.hmv.com.hk/product/japanese.asp?sku=102636

Both are HK press & will be out on 30th Sept

CD C - http://www.hmv.com.hk/product/japanese.asp?sku=102666

CD D - http://www.hmv.com.hk/product/japanese.asp?sku=102692

Both are Taiwan press & will be out on 5th Oct

links are up to preorder L (all 4 editions) on 5music

CD + DVD A http://www.5music.com.tw/CDList-C.asp?cdno=431465679207

CD + DVD B http://www.5music.com.tw/CDList-C.asp?cdno=431465679208

CD C http://www.5music.com.tw/CDList-C.asp?cdno=431465679209

CD D http://www.5music.com.tw/CDList-C.asp?cdno=431465679210