Realme has made the C3 official via its Twitter feeds. This phone will be powered by MediaTek's new Helio G70 chipset. This upcoming device will also have a 6.5-inch display and dual rear cameras, albeit ones that may improve over those found in the C2 in certain ways. The OEM has also revealed it will have a 5000mAh battery.
https://www.notebookcheck.net/The-Realme-C3-is-to-be-the-first-phone-to-rock-the-new-Helio-G70-gaming-SoC.452832.0.html