While I'm disappointed hat Kanger has changed the coil and made them incompatible with older tanks, I think there is a very good chance they will do a similar design that will work with older clearos. I don't have any inside knowledge and haven't heard any rumors but just based on their past history I think this will happen. I also think if the new coils won't work with their older tanks, they must have a compelling reason they did this. Like the new coils will significantly outperform the original SubOhm coil design. So while mildly disappointed, I'll bet they bring a better product to the market as a result so I'll wait and see what gets released and how good it is.
One thing is clear though, the Atlantis has seriously raised the bar for tanks and if Kanger changed their design it was to make sure it was a serious competitor in this market space, and will possibly be a leader. Time will tell.