Board Thread:Questions and Answers/@comment-31100110-20180605130208/@comment-4199482-20180605130530

Settle down friend. It probably just means the issue they're trying to fix doesn't have a clear cut solution so they need a little bit more time. Ultimately the lack of a set finish time is to prevent people being upset at extensions and also to prevent people relogging at the same time right after maintenance, thereby crashing/slowing it down again.