I was trying to see the twitch stream of Epic GDC presentations today, but got distracted by coworkers… Are those presentations going to be available on Epic’s youtube channel later?
They will surely upload them. Otherwise take a look at the twitch site from epic, there you can also see all the previous streams: ://www.twitch.tv/unrealengine/profile/past_broadcasts 
Oh! Didn’t see that “Past broadcasts” tab 
Awesome, thanks!