Marco have released not only the preview for their latest single, [Amaji], but also samples of the two other singles in the "rain trilogy" that were previously announced. (The cover art for both types of Amaji has also been revealed.)
Although [Amesansan] was released not too long ago, [Sono yami ni ame ari] (which seems to be just Rei talking, judging from the preview???) will be out next week, and both singles are live-limited. We have yet to see the full PV for Amaji though, assuming that they will release it just as they did so for their previous single.