User blog comment:MeerkatQueen/VOCALOID 4 Expectations/@comment-3076833-20141102163857

I've talked about it on the thread of a similar nature (which happens to be mine ¬¬) but I don't think V2 -> V4 will happen since there's a large gap between the software compatibility and most of the V2s that are worth while importing into the system have already been updated, or will most likely be updated to V4 anyway.

The one real thing i'm hoping for with V4 is the ability to easily change the tones of the voices, which i've described here : http://vocaloid.wikia.com/wiki/User_blog:Serza5/Ideal_Append/Tone_System

I'd also like to see talk be implemented as standard on the engine, given that a fair chunk of VOCALOIDs are being placed on seperate talking software it would certianly give YAMAHA a boost to allow for all VOCALOIDs to be able to talk within their software (albeit it requires extra sounds for talking but i'd say it's worth it).

Voice wise I can't say I expect anything other than a new line up of voices to choose from, most I want here is YAMAHA to properly acknowledge and support non-Japanese VOCALOIDs.