There will be a live broadcast called "Welcome to Kumi's HOTEL!" on NicoNicoDouga on 08/06 10 pm japanese time to commemorate the single release!
It will be hosted by RIO, a DJ and radio moderator Kumi is friends with.
You can send messages and questions to Kuu by Twitter with hashtag #koda on her offiicial staff's account @KODAKUMINET.
Here's the link to the info on NicoNicoDouga:
http://live.nicovideo.jp/watch/lv187280012