Its just that mining rewards are constantly going down day after day after day.....even as the first box was added, the break even time went out to 10 months
That is because many new accounts/deposits have been made, and resources are split among them. New accounts exceeded the hashing power of 1 box. Maybe the news of the incoming infrastructure had this consequence. However I invite you all to comment after the work will be finished, expecially because we're just 1 or 2 days from it.