It's the almighty hops. A lot of recent breweries are taking this to the next level by dry hopping with multiple hop varieties. While this may be the best thing in the world because of the wonderful aromas they produce, those hop oils are the first thing to fade and make a beer taste flat and oxidized. Also the isomerized alpha acids that produce that well known bitterness characteristic will not fade as fast, but definitely will fade with time.
The most noticeable to jump on this bandwagon is Stone with the Enjoy By series. It's a huge one, at 9.4% ABV and 88 IBU's. This double IPA has 11 different hops, so it's no surprise this beer is to be consumed within a month of its release. This insane beer is amazingly balanced. At first taste you can’t possibly realize the time they put into each hop variety and what it has to offer this beer. After that you realize the large amount of hops are masking the huge 9.4% ABV tag! Following that monster ABV you notice the beautifully crafted malt character. Last, and certainly not least, you notice this is without a doubt the most complex and devastatingly beautiful double IPA you've found!
We hope you are just as excited about hops as we are. Make it a point to drink those hoppy beers right away. And remember don't let it last too long, and respect the almighty hops!