微信有大变化！最新的“后悔药”来了

Group 1 - The new feature in WeChat allows users to "revoke all messages sent in this session" within two minutes, enhancing the efficiency of message management [2][4] - This feature enables users to batch revoke messages, including text and images, addressing the issue of mistakenly sent multiple messages [4][6] - Currently, the feature is in a limited testing phase, available to only a small number of users, with a wider rollout expected in the future [6] Group 2 - Different message types have varying revocation time limits: text messages can be revoked within two minutes, while files like Word, Excel, and PDFs can be revoked within three hours [8][9] - Users can send images in a way that allows for revocation even after two minutes by sending them as files, which can be revoked within three hours [9][14]