As you can see in the screenshot above, the certification information reveals that the device will be available in two variants: X6A and X6L. There's, however, currently no information on the difference between these models.
From what is known so far, the handset is powered by a 10-core MediaTek Helio X20 chipset, and sports a a 6-inch QHD screen with Force Touch. It has 4GB RAM (1GB dedicated for video), packs in a 4,000mAh battery, sports a 21MP rear camera, and offers 4G connectivity. The handset also features a fingerprint scanner and quick charging capabilities.
However, keep in mind that none of these specifications has been officially confirmed yet.