Wrong. After Age of Empires 3 (2006) there was no new Age of Empire worth to mention.
(Age of Empire online was a Free2Play/whatever game based on the years older Age of Mythology engine. Microsoft closed the Ensemble Studios. Lately Microsoft asked a small unknown studio to recompile old Age of Empires 2 and Age of Mythology and add some community patches and rerelease those 15+ year old games as HD (not really any graphical changes, beside minor stuff, ad bigger resolution), and some new missions/campaigns. But we know the game and it runs still fine with community patches on Win7. And replaced the network lib with Steam, but it's a buggy mess - the original game run more stable. What the AoE community wants are real new games, not old games one played already for 15 years and hundreds of hours know very little secrete.)
Wrong about what? (Actually the year 2014 was wrong). But releasing a HD version with 3 expansions (they are named expansions on the wiki) in 2013, 2015 and as late as Dec 2016 (less than 6 months ago) definitely sounds to me like a game which is not dead.
Might be buggy but recent releases + active community isn't really dead at all.