A reliable Weibo leaker now claims that OPPO will hold a "blockbuster" launch event before the end of 2021, and that its inaugural foldable smartphone is likely to be the star of this show. The device is painted as a bona fide rival for flagships such as the Samsung Galaxy Z Fold3 or Huawei Mate X2 based on its rumored specs.
https://www.notebookcheck.net/OPPO-has-a-2021-launch-date-for-its-first-gen-foldable.574858.0.html