We're in close communication with the Twitter team. They are supporting Apple's SKAdNetwork framework, and will share this data with MMPs (including Branch). This means we will be able to ingest campaign results data, and continue providing aggregate reporting for your Twitter ads.
Twitter has provided API documentation to us for their SKAdNetwork integration, which we are working on and expect to have completed prior to the release of iOS 14.5.
Updated about a month ago
|iOS 14 FAQs|