All that said, it seems the Forgotten Empires team wanted to kick up the Age of Empires: Definitive Edition and as such are remastering the original graphics in 4K, re-recording the audio as well as other improvements. Information on the systems they are bringing the Definitive Edition to are sparse but it seems like it's coming to XBox One and PC. Again, no details on if PC means Steam or the Windows store but when it's announced i'll let you know. I think one of the reasons why Age of Empires II HD is a great version of the game is that the Steam integration is top notch. So having Age of Empires 2 HD on Steam and then the only version of Age Of Empires: Definitive Edition on the Windows Store seems odd to me. I don't mind if it comes to the Windows Store and Steam because giving people more choice to places is buy the game is a great idea to me.
If you are looking to dust off your original Age of Empires discs you can check the Unofficial Age of Empires patch check on the website linked below and while you are at it let me know what you are thinking of the new announced Age of Empires: Definitive Edition!