Board Thread:Questions and Answers/@comment-6433273-20140907232353/@comment-53539-20170522094500

SeeU's sales scope has slowly shrank over time and focus is more on Uni right now. I won't keep your hopes too high for SeeU for the moment and instead show support for Uni. There is another vocal due for her afterwards and she has two more related releases upcoming.

SeeU would likely be promoted with Uni much like how English Vocaloid are promoted with each other. There is little difference between V3 and V4 vocals.