Responses
The text on the cover and on the webpage of be boy gold translates as "a new chapter of finder starts" and "are Asami and Akihito still unconscious?".
From that I would judge - and hope - that it is indeed not an extra/bonus, but the beginning of the new chapter, but I guess we can only tell once we see the pages
Next Be Boy Gold magazine has Asami on it.
Text on the webpage says "Ayano Yamane's finder series is starting a new chapter!"