PORTLAND, Ore. (MainStreet) – Back in April, we told you that craft beer would be unrecognizable by 2020. That process has begun, whether the industry is ready for it or not.

Within the last month alone, the SABMiller and MolsonCoors joint venture MillerCoors bought two-year-old San Diego brewery Saint Archer. Prior to that, it hadn’t made an acquisition since buying Crispin Cider in 2012 and hadn’t bought a craft brewer since picking up Jacob Leinenkugel Brewing Company in 1988 — before MillerCoors and before SABMiller, when Miller Brewing Company stood alone in Milwaukee.

In a far larger deal, Heineken NV took a 50% stake in Petaluma, Calif., brewer Lagunitas. The 22-year-old brewer produced 600,000 barrels last year, making it the eleventh-largest brewery in the country and the sixth largest craft brewer, according to the Brewers Association craft beer industry group. Lagunitas had opened a new brewery in Chicago and planned a second brewery in California, but the influx of Heineken cash was only surprising because of founder Tony Magee’s previous criticism of other acquired brewers.

Anheuser-Busch InBev — which drew Magee’s ire over purchases of Patchogue, N.Y.-based Blue Point, Bend, Ore.-based 10 Barrel and Seattle’s Elysian last year — was relatively quiet in purchasing Fennville, Mich.-based Virtue Cider. It came of little surprise, as Virtue needed cash and its founder — Greg Hall — was previously an owner and brewmaster at Chicago’s Goose Island, which A-B bought in 2011.

With A-B getting much noisier after announcing its intention to buy SABMiller — which would give A-B a 30% stake of the global beer industry while potentially flipping SABMiller’s U.S. holdings to MillerCoors partner MolsonCoors — it’s clear that the big brewers are incredibly concerned with acquisitions. Though SABMiller’s snubbed takeover offer for Heineken last September should have been a warning — if A-B’s $20.1 billion purchase of Grupo Modelo and its Corona and Pacifico brands in 2013 wasn’t — it’s incredibly clear to brewers, drinkers and investors alike that the future both global and U.S. beer is cloudier than ever.