Valve appears to have soft-launched its next-generation engine Source 2.

According to user reports, code allegedly related to the next-generation has appeared in Dota 2 following the alpha launch of the game's Workshop Tools last night, with the entire game believed to have been ported over to Valve's new engine.

"So, The Workshop tools isn't just a modding platform. It's Source 2. And it's running Dota 2," reads one thread on Reddit.

"Everything in this package is a new game. It's all the Dota assets and code ported over to Source 2. That's why Hammer is different. That's why the console is different.

"Guys. Valve just soft launched the entire Source 2 engine."

While VideoGamer.com has been unable to verify the report, the thread goes on to provide file names appearing to relate to the new engine, screenshots of code referencing the new engine and images of a brand new console.