The new Yume Nikki project has received a Japanese release date. Yume Nikki: Dream Diary will be released on February 23, 2018. It will be available on PCs in English, Japanese, Korean, Simplified Chinese, Traditional Chinese, French, German, Italian, Russian and Spanish. The Japanese price is set at ￥1,980 (~$18). It is unknown if it will launch worldwide on the same day. (Thanks, Game Maniax!)
In addition to the release date, price and language options, some initial Yume Nikki: Dream Diary character designs and screenshots were shared. Some of the character designs appear to show Madotsuki, Poniko, Monoe, Monoko a Toriningen and perhaps KyuuKyuu-kun.
The original Yume Nikki is available for PCs via Steam.