Sadly whilst the fighter confirmed the date and venue for the bout there no mention of the under-card. That will hopefully come in the new year, though is admittedly unlikely to come from Iwasa himself.
For the Japanese fighter this represents his biggest opportunity to move towards a world title fight and in fact a win could see him getting his opportunity at the belt by the end of the year. It's not the easiest fight he'll ever have but it is one that he'll be expected to win.
(Image courtesy of http://ameblo.jp/iwasaeagleeye)