1. Size of downloaded files/streams is controlled during download, and not after download completion, as before. This allows to stop downloading a file (or reading a timeline), which appeared to be larger than configured "Maximum size of an attachment"
2. If attachments are configured to be downloaded via Wi-Fi only: During download, AndStatus checks periodically, if Wi-Fi connection is still active. In case Wi-Fi connection is lost, the download is interrupted and will be retried later.