First off, this isn't really news. The info about Hikki's DVD release was noted
here. Second, neither of these items have been released yet, so saying it's the "hottest challenge ever" is a bit presumptuous, considering that it'll be a new single vs. a DVD-single (which was already released as a normal single) and the Budokan DVD. Also, just because this was posted on Ayuchina doesn't always make it news.