Qualcomm confirmed today that it will be announcing its next upper mid-range chipset, the Snapdragon 660, next week on May 9. The company sent out invitations for the Beijing event to Chinese media.
While there aren't any concrete rumors that suggest what the Snapdragon 660 might actually be, some alleged specs leaked last November, alongside unconfirmed (at the time) specs of the Snapdragon 835.
It looks like it will be a 14nm CPU that will be paired with the Adreno 512 GPU. Judging by the leaks, there are two possibilities for the CPU core: octa-core Kryo, or a combination of Cortex-A73 and Cortex-A53, either of which would use big.LITTLE methods, which means that the more powerful cores would handle larger tasks, and the less powerful yet more efficient cores would handle smaller tasks.
The LTE modem will be the Snapdragon X10, which is the same that shipped in the 2015 flagship chipsets, the Snapdragon 808 and 810. This will offer 450Mbps download speeds and 50Mbps upload speeds.
Naturally, the only part of this that's actually confirmed is that Qualcomm will announce this on Tuesday, so we'll find out more then.