OnePlus has officially begun seeding the latest OxygenOS update for the OnePlus 8 series. OnePlus 8 owners are getting OxygenOS 10.5.7 while the version for 8 Pro is 10.5.8. The new updates change a lot of stuff under the hood ranging from display issues to camera tweaks and stability improvements and network connectivity optimizations. In addition, you are getting the April security patch. The updates are currently seeding to EU, Indian as well as international OnePlus 8 units. The update should reach global availability in the coming days. OxygenOS OS 10.5.7/10.5.8 update...
Source: https://www.gsmarena.com/oneplus_8_series_gets_oxygen_os_1057_1058_updates-news-43200.php