6 GB RAM variant of the OnePlus 3 hits TENAA listing
It's unclear how else the "bigger" model would differ. One could speculate that it will have 64 GB of internal storage, while the 4 GB RAM variant would only have 32 GB. However, the older listing, where we only saw the smaller RAM chip, still showed 64 GB of on-board storage, so combinations are still up in the air. We also don't see any processor differentiation – both have the Snapdragon 820 and there really isn't anything higher to go to currently. But since it doesn't make any sense to have a version of the OnePlus 3 that only upgrades the RAM chip, we have to assume that the two variants will be 4 GB RAM / 32 GB storage and 6 GB RAM / 64 GB storage until we get further info.
And all of our questions might just end up being answered on June the 14th, as this is the rumored launch date for the device, however, that's unofficial information. What we do know from an official channel is that 30 lucky winners who want to review the new "flagship killer" will receive OnePlus 3 units some time between the 13th and 20th of June. So, it would make sense that the phone should be ready for sale somewhere around that period.