Pete Lau, OnePlus CEO, announced plans for a 5G smartphone back in the summer. At the Hong Kong 4G/5G summit, hosted by Qualcomm, his co-founder Carl Pei said the company is on schedule for an early 2019 launch and we expected that the phone might be the OnePlus 7 (or whatever the OnePlus 6T successor is named).
Apparently this isnt the case, as reported by as a OnePlus spokesperson announced the 5G device will not be a successor of the OnePlus 6T and will most likely arrive in a different category with a higher price tag.
Cristiano Amon, Qualcomm president, and Carl Pei on the stage of the 4G/5G summit in Hong Kong
According to the report, OnePlus 6T will have a successor, but it wont be 5G-enabled in order to keep a relatively lower price, compared with other smartphones with similar specs. This means we might see two OnePlus phones launched together, something the company hasnt done yet.
Name-wise, the spokesperson did not confirm if we might see names as OnePlus 7 or OnePlus 7T. There is also quite early to know if the company will be ready to announce the 5G device at MWC in February or we should wait for a separate event.
Source (in Spanish)