Normally I'd agree about being skeptical but the amount of details indicating this is happening keep getting added to from both Valve staff and all these various folks who're connected to the teams behind it. At this point it's not if, just when. I'm not sure if I truly believe it'll be this year but it might. At this point it's also become one of the worst kept secrets since team members are getting itchy in releasing details and is starting to remind me how it took legitimate assets getting leaked for Oblivion Remastered to get an official announcement for that which was barely weeks before launch. I pretty sure we'll have screenshots or something before the summer is over regardless of anything official or not.
