Watch the livestream today and this weekend from 7 PM UTC on the Steam sale page while logged into Steam. You should receive today’s drops after a couple minutes. The drops are sellable on the Steam market.
New rewards on saturday and sunday (sorry missed first day’s rewards yesterday), rewards are visible here.
Full announcement can be read here.
Edit: Got 3 choo choo emotes in a short time. Cheers.
I like trains, but these livestreams tend to be pretty boring.
Anyways !drop =P