One of the most reliable insiders on Valve projects — Gabefollower — reported on social network X that new mentions of HLX were found in the latest Deadlock update. These findings do not reveal details in themselves, but the main thing is that they confirm that Valve continues to work on a project related to Half-Life.
The community's reaction was stormy: some players enthusiastically welcomed the news and again started talking about the imminent announcement of Half-Life 3, while others adhere to the philosophy of "nothing ever happens" and do not believe in a happy outcome. There are also those who are completely disappointed and believe that HLX is not a new part of Half-Life at all, but some other internal Valve project.
To date, there is no direct evidence that HLX is Half-Life 3. However, dataminers have found many hints in recent years of an ambitious project with unusual mechanics: a fire and thermal conductivity system, an improved gravity gun with advanced physics for puzzles, and advanced AI.