Back then it was #1 post on HN for 3 consecutive days: https://news.ycombinator.com/item?id=15892066
The game was rewritten from the ground up: New graphics, WebGL shader effects, Map obstacles, Completely new UI, Additional special ability for all aircraft, Daily/Weekly/Lifetime achievements, Levelling rewards, Loadout system for equipping skins, flags, flairs and titles, 5 game modes: FFA, CTF, Battle Royale, Racing, Zombies, Public leaderboards + player profiles, Paid in-game cosmetics (skins, flags, VIP pass)