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>January 8, 2013 - Pokemon X & Y Announced, Gameplay Shown, Chespin, Fennekin, Froakie, Xerneas & Yveltal (shown but not named)
>February 14 - Sylveon (didn't say the type)
>April 6 - Mega Mewtwo Y (didn't explain anything about it)
>May 14 - Riding on Gogoat, Lumiose City, Fletchling, Pancham, Helioptile, Gogoat
>June 11 - Sky Battle, Talonflame, Clauncher, Skrelp, Horde Battles
>June 14 - Shauna, Tierno, Trevor, Serena, Calem, Gyms, Viola, Scatterbug, Spewpa, Vivillon, Flabébé, Litleo, Noivern
>July 12 - Sycamore, Inkay, Malamar, Pangoro, Slurpuff, Spritzee, Team Flare, Xerneas, Yveltal
>Feb 26, 2016 - Sun & Moon Announced
>May 10- Starters Revealed
>June 2 - Legendary Info & Explore the Alola Region
June 4 - The Incineroar, Decidueye & Primarina pages get posted on /vp/
>June 14 - Pikipek, Yungoos, Grubbin, Battle Royal
>July 1 - Tapu Koko, Charjabug, Vikavolt, Drampa, Bruxish, Cutiefly, Togedemaru
>July 7 - Salandit
July 8 - Chinese text leak with a bunch of info
>July 19 - Wimpod, Bounsweet, Comfey, Mudsdale, Mimikyu, Bewear, Hyper Training
>Feb 27, 2019 - Sword & Shield Announced, Starters Revealed
May 24 - 4chan leak with info on characters, mechanics and pokemon
>June 5 - Wooloo, Dreadnaw, Corviknight, Gossifleur, Eldegoss, Wild Area, Dynamax, Max Raid Battles, Leon, Hop, Magnolia, Sonia, Milo
>June 11 (no official trailer but demo and direct footage) - Nessa, Yamper, Impidimp, PSS, No National Dex announced in an interview
>July 8 - Alcremie, Yamper (officially), Rolycoly, Duraludon, The Gym Challenge, Chairman Rose, Oleana, Bea, Allister, Gigantamax, G-Alcremie, G-Dreadnaw, G-Corviknight
We've had fewer trailers and fewer Pokemon, but each trailer has had more stuff at once.