Valve composer reportedly mentions HLX during GameSoundCon audio panel

During a GameSoundCon panel, Valve composer Mike Morasky referred to HLX while discussing HDR audio, according to Ars Technica. Ars reports that the name has appeared in Valve engine code and has been widely linked to a possible new Half-Life project. VideoCardz says Morasky did not explain what HLX is, confirm a Half-Life connection or give release information.