Valve employee Mike Morasky appears to slip the codename HLX at a conference

Reddit user /u/Eepoxi says Valve employee Mike Morasky mentioned the codename HLX at around 57:50 during a conference on video game audio design, and the codename is believed to point to the rumored next Half-Life game. The post says this is the third time Morasky has slipped the word HLX in public video, and someone beside him is seen whispering a sarcastic Nice work.