While there have been a few singles ("What a Wonderful World", "America", and "Angel") and mini-albums (The Holiday EP, Jupiter, and the longer Angel album), across all of these only three previously unrecorded songs were featured: "Angel", "Home", and "Santa Will Find You". I underline this not to disparage any of these albums or songs, but to emphasize that, in my opinion, they are definitely coming due to release some new music!
However, someone looking at it from another angle , may see the scarcity of original songs, or never before recorded songs, as being indicative that a new album is not likely because new material is lacking. In fact, of the three completely brand new songs released that I listed, two of three were composed by Takatsugu Muramatsu and the third song was a pop song by Mindy Smith; all three arranged for Libera by Robert Prizeman. Of course these are not bad developments as several of the Muramatsu songs, as arranged for Libera, have been very popular among fans, and certainly the re-recordings of some earlier songs were fantastic to hear, but there just may not be enough material for a new album. Therefore, although they may seem to be due for a new full album, there may not be enough new music to justify such an album, and they will continue releasing singles and mini-albums in 2017.
So depending upon your perspective....
- A new, full album may be extremely likely.
or perhaps - There will be no album in 2017 and they will release another mini-album or single.
or maybe - They will skip 2017 with regards to new music and focus instead on a release in 2018.