In a post on the official OnePlus forum, CEO Pete Lau took to mention (or rather confirm) some key OnePlus 6 specs. The upcoming flagship will feature a Qualcomm Snapdragon 845 along with 8 GB RAM and 256 GB storage. Nothing else was mentioned other than these but the post went into detail of how OnePlus engineers strive to improve the user experience.
https://www.notebookcheck.net/Pete-Lau-briefly-mentions-key-OnePlus-6-specs.295502.0.html