First off, I can't answer that question, as I am not a Neoflash policy maker (the moderators/testers are usually volunteers who want to see the product improve since we purchased it). I hope my neomax I purchased at full price when it first came out realizes more of its potential....
Now, if one follows the Neoflash product cycles, there are new items coming out frequently... Neoflash users have to live with that (sure, it's not ideal, as it can cause uncertainty for existing users, but it's not illegal to continually innovate)
If you have already made up your mind about what's definitely going to happen, maybe you should sell yours?? (rather than waiting for mk4 to become available and depressing the value of mk2/3 even further)
Even for those who want to purchase a mk4, this may not be a bad idea. I don't think there is any doubt that the next hardware iteration is going to be better than the current one, as holds true in other sectors.... (there are apparently at least two versions of mk4 -- mk4 mini sounds like it has more limited functionality)
Otherwise, for those of us who are keeping and making use of our magic keys currently, we don't have much choice, but to wait and see what actually happens.
BruceG