There is another Moto G4 phone announced shortly after those two - the Moto G4 Play. Basically, it's last year's Moto G3 with a refined design and it's splash-proof.
The Moto G4 Play features a 5" 720p display and runs on the Snapdragon 410 chipset with 2GB of RAM. The 410 chip packs a quad-core 1.4GHz Cortex-A53 CPU and Adreno 306 GPU.
The rest of the G4 Play specs include an 8MP rear snapper, a 5MP wide-angle selfie camera, expandable 16GB storage, and a 2,800 mAh battery. Some notable connectivity options are the LTE Cat.4 and Dual-SIM telephony.
Finally, the Moto G4 Play runs on a clean Android 6.0.1 Marshmallow. The phone will arrive this summer, but pricing and exact availability will be announced later on.