It is recommended to follow Roll20 on Twitter and/or the Blog which will let you probably know what's coming up in the next month or two.The roll20 devs do not speculate much further than that because in their experience, things are unpredictable and if it is promised something too far in advance and things change or the schedule changes, people get upset. The devs will tend to talk about new stuff when it's far enough along that it can confidently be said when it will be approximately released. As this answered your question the best it can be at this time, I will be closing this thread.