One possible explanation can be that the decision makers pushed for that certain day and then the developers created something but it was not in "perfect" shape. Its like being pushed for last minute report.
InsightsDigital
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Like you said, you can retweet manually. The only people who are affected are the power retweeters I would assume. As Twitter is a free service, I doubt people will get as outraged with this than if it was a product from Microsoft.
MktgRob
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