Aside from seeing the Chinese VOCALOID YanHe in concerts and alongside the other Vsinger VOCALOIDs, we have not heard much information about her getting any updates, event though she was released back in 2013 for the V3 engine.
Although we do not know for sure if she will be getting an update, there was a hint on Vsinger’s Weibo that they were discussing about a YanHe update, as well as a [Sweet] bank. Aside from that, we currently do not have any more information. Stay tuned to VNN for any other updates we may get!