HL3 (believe or not)?

[You Noob]

I was just looking on the Internet when I was falling over some stuff...
1. I saw this video about hl3 in portal2

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https://www.youtube.com/watch?v=U2557K2YNeI

2. If you heard about jira?

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http://www.pcgamer.com/2013/06/19/valve ... ad-3/#null

3. cs:go creator also confirmed the game on twitch live (I saw a retransmission of it on twitch)
RGN webside:

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RGNhttp://www.ign.com/articles/2014/05/23/ ... ke-creator

broadcast:

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http://www.twitch.tv/gorgntv/c/4263036?t=33m55s

What do you think? Confirmed or not!?