To those who aren't checking the quarterly toy catalogs, it was revealed that Poppy will use the Tokimeki Crisis Gashat and the Buggle Driver II to transform into Kamen Rider Poppy. It is likely that this photo was taken around the time they are filming scenes related to it, which is likely since the item is set for a May release. That or the cast is just messing around.
[Source: Kamen Rider FB]