Today the Chinese company’s Head of Product, Oliver Z., has decided to answer a few questions on the matter. He has thus revealed that Android O will be the last major update headed to the OnePlus 3 and 3T, with security patches and individual app updates coming “for the foreseeable future”. After the 3 and 3T get the O update, the Open Beta Program will be “moving” to the OnePlus 5.
Speaking about the next updates for the 3/3T, Oliver mentioned that the August security patches are going to be out “soon”, while the OxygenOS 4.5 build will come “in the next 1-2 months”. This means the 3/3T will catch up with the 5 in terms of OxygenOS version, but some features from the newer handset will not be making the transition. Reading Mode, off-screen gestures, and DCI-P3 screen calibration are not going to be implemented in the 3/3T because of “hardware differences”.