OnePlus has announced a new open beta version of OxygenOS for both the OnePlus 3 and OnePlus 3T, specifically Open Beta 38 for the OnePlus 3 and Open Beta 29 for the OnePlus 3T. The update includes the June security patch. There really isn’t much else to report with this update, other than some improvements to the OnePlus Switch app as well. You can read the full changelog below.
OxygenOS Open Beta 38/29 for the OnePlus 3/OnePlus 3T Changelog
Updated Android security patch to June 2018
General bug fixes and improved data transfer stability
Users can wait for the OTA update to reach their device via a staged rollout, use the Oxygen Updater app linked below to force the update via VPN, or they can sideload the update after downloading the full OTA files. Keep in mind that open betas may contain some bugs and should not be installed if you aren’t willing to deal with any issues.