Pantheon is the next VGU, Roadmap would be live within minutes
Source: From Spideraxe30's twitter
Pantheon's image teaser
https://pbs.twimg.com/media/D42a8lOW0AEClwK.jpg
Also, Malicious Metal posted mordekaiser's image teaser
https://pbs.twimg.com/media/D42aKccXkAAm--Y.png
EDIT:
AD Assassin Teaser and the New Support Teaser images https://pbs.twimg.com/media/D42f5u9X4AIGn84.png https://pbs.twimg.com/media/D42f6t4W4AEKYYJ.png
Non-Traditional Marksman Teaser https://nexus.leagueoflegends.com/wp-content/uploads/2019/04/05_Teaser-HalfFrames_794d3985l76z6z0foz4f.gif
EDIT 2 for my thoughts lol: I'm so hype with that jungle image because, hmmmm, kumungu jungles/the jungles duh! and its one of my favorite factions. I hope riot would make it a faction on its own soon. Cant wait. Plus, it looks like riot would touch the illegal loggers territory story with this one (based on the image, its a piltover/hextech car based on the design that destroys this vastaya's village in the jungles) Lastly, thanks god its pantheon's turn to shine. Goodbye Pizza feet (except udyr). I hope Volibear is next :D But my instincts tell me its gonna be nocturne/udyr.

designer is Axes or Reinboom?