It's a day in the beer industry that many of us just a few years ago thought would never occur. But whether you like it or not, it's becoming closer to becoming reality as SABMiller has accepted a takeover bid from Anheuser-Busch InBev. The offer is reportedly worth $104.2 billion.

It still needs to be signed off by regulators and shareholders.

This isn't the first time the two companies have talked about a possible takeover, as previous offers were much smaller and turned down by Miller.

What could this mean for the future of MolsonCoors? According to industry insiders, this could mean a new owner to put to rest any antitrust concerns that regulators may have. SABMiller may need to sell their 58 percent stake in the company.

According to the Denver Business Journal, ABInBev already controls close to 45 percent of the United States market. MillerCoors equates to 30 percent of sales across the nation.

The future could continue to be shaken up by the announced merger. Molson Coors already holds a 42 percent stake in MillerCoors and has the first right of refusal to acquire that stake. That would give the company sales control of SABMiller's products in the United States.

When you thought you could figure it all out, it all changes in an instant.