Well this is quite surprising, according to a rather heated debate between p0sixninja of the Chronic Dev Team and MuscleNerd of iPhone Dev Team on Twitter, the former accused the latter of leaking the SHAtter jailbreak, which had been preserved for the next iPhone update as well as the next gen iOS devices.
MuscleNerd has been publicly accused by p0sixninja claiming his hand behind the leaking of the exploit; Nevertheless, MuscleNerd refuted allegations leveled against him by saying that it would be illogical for him to leak the exploit as he would be needing the jailbreak to perform an unlock for the next device.
MuscleNerd also tries to substantiate his claim by reminding p0sixninja that there were 15 others in the room when the code was posted by pod2g, initially, the SHAtter exploit was developed by pod2g a couple of months after p0sixninja had discovered the crash, but its launch was delayed due to Limera1n release. However, it has now been leaked.
So what all this drama boils down to is the fact that it is indeed possible for Apple to block this particular exploit when the time comes for any new iDevice to be released. However, p0sixninja claims that an untethered bootroom exploit is still on its way.
The whole conversation between @p0sixninja and @MuscleNerd can be viewed by clicking on the links for their Twitter accounts.
Via iClarified