Don’t know if this has been posted already, apologies if it has. Taken from IGN.com:
San Diego Comic Con: Friday, July 10th
Hunt for the Truth: Following the Trail of the Halo 5: Guardians Story
“343 Industries gives a sneak peak on details of the Halo 5 campaign and end their panel with a Q&A”
10:15AM - 11:15AM
Alarm clock set for 6.15pm UK time 
Is there a stream for this anywhere?
Woooooooo! That’s good news. Can’t wait to watch that today!
> 2533274795233660;3:
> Woooooooo! That’s good news. Can’t wait to watch that today!
It’s going on right now. Unfortunately SDCC is never streamed so we won’t see it. Best we can hope for is updates, but I’ve yet to find someone who’s in the theater giving out any kind of updates on Twitter.
I have looked for a bit, where is this being streamed?
> 2533274898131165;5:
> I have looked for a bit, where is this being streamed?
It’s not.
> 2533274884104399;6:
> > 2533274898131165;5:
> > I have looked for a bit, where is this being streamed?
>
>
> It’s not.
rip
No live tweeting ? 
I was hoping for a stream, devastating. The wait for more info continues…
> 2533274813478627;10:
> This guy is live tweeting. https://twitter.com/DustStorm
You beat me to it! Haha