Certainly, many enthusiasts are looking forward to Diablo IV Gold hearing more about Diablo 4 in Blizzconline early next season. What's going to be shown there continues to be seen, however an update of some sorts would go a very long way. It's even possible that at least one of both lost launching classes (the three supported being Barbarian, Druid, and Sorcerer) have been shown, however what they could be is just known by Blizzard.
That said, there are several Diablo courses that seem unlikely in contrast to other people, like the Amazon, that would be an ideal fit. One thing fans should remember is that the present composition of courses that affect this, namely being that there's two spellcasters and a melee concentrated character. The likeliest market to be filled is just another melee class for those who don't need the barbarian, as well as a dex-based ranged one. For the time being, here is a couple of classes that fans shouldn't expect to see at launching.
The Diablo 3 Necromancer was incredibly popular, and lovers will like to see it return. It's simply not very likely to occur for a couple of reasons. First, it had been included as DLC in the last game, so it would be strange to see it arrive first thing in launching in the second.
Second, while using three spellcasting and magic-based courses would not really be a terrible thing in Diablo 4, that niche already has the Druid and buy Diablo Immortal Gold the Sorcerer. Again, something Dex-based seems just like a shoe in for one of the courses, leaving the Necromancer on its own.