The Cortex-A32 is now ARM's smallest and lowest-power ARMv8-A processor to date. While it's an ARMv8 processor, it doesn't support 64-bit ARM (AArch64) but is rather only a 32-bit processor. The A32 is designed for "ultra efficient 32-bit compute" performance and with its very small footprint is designed for use-cases in consumer, wearable, and IoT devices.
The Cortex-A32 is said to be around 25% more efficient than a Cortex-A7 and about ten percent or more efficient than a Cortex-A35.
More details on the new Cortex-A32 can be found via ARM.com. Hopefully we'll end up seeing the Cortex-A32 in a nice ARM Linux development board in the near future as it would be a fun little 32-bit SoC for benchmarking.