I wouldn't expect the new hymnbooks or songbooks that have been announced to be available for at least a year – likely two years. Members are still being invited to submit suggestions and original compositions, so they're still in the gathering / research stage. However, I do think it would be wise to figure out how many are actually needed, as mentioned above – make observations in your ward to see how many people use the physical book, vs. the Sacred Music or Gospel Library apps.
Samuel Bradshaw • If you desire to serve God, you are called to the work.