Well the fact that the first DLC released so soon was because they wanted to get it out before christmas, wich is why I don't really count it. Would be lovely if we get a new DLC next month, but I wouldn't count on it. But I hope you are right
Same reason why I think it will released in July (before the summer vacation period for a lot of people)
Wouldn't be surprised/disappointed if they released it in August. With this unique situation, you need to lower your expectations when it comes to content/release dates.