- it shows that it needs to wait for PoW to finish - it waits a bit for new objects to be distributed - it displays a better progress indicator in the status bar Previously, people who don't understand how PyBitmessage works sometimes shut it down immediately after they wrote a message. This would have caused the message to be stuck in the queue locally and not sent. Now, it will indicate that the PoW still needs to work, and it will wait a bit longer so that the message can spread. It's not a completely correct approach, because it does not know whether the message was really retrieved after the "inv" notification was sent.