NuAns is teasing a new phone on its website, which would presumably be a successor to its current Windows 10 Mobile flagship, the Neo. Translated from Japanese, the first line in the image says, "Everything is new. All in one." As you might have guessed, the next line says that more will be revealed on February 20, followed by a statement that more details will follow.
The image is nothing more than a black rectangle with rounded corners, so it tells us nothing about the device itself. It seems very possible that it will use Android though, as NuAns has struggled with Windows 10 Mobile until this point.
Only available in Japan, the company had a Kickstarter campaign to bring the Neo to other parts of the world. It only reached $142,368 of its $725,000 goal.
At CES last month, we interviewed the President of NuAns, and he expressed disappointment with Windows 10 Mobile, saying that Microsoft had implied that it would be bigger than it was. When we asked if the company's next handset would run Android, he wouldn't answer the question, but he certainly didn't emphasize a commitment to Windows.