Ali over at Shadowloo helped out Gamespot Australia recently by conducting an interview with Tekken producer Katsuhiro Harada on a variety of topics. In this 25 minute video he talks about how TTT2 will use the same "netcode technology" as Soul Calibur V as it's the most recent netcode available at the company. The different teams in the company constantly share information and this is just one example of that.
When asked about mini-games, it sounds like we wont be seeing many of the goofier ones found in previous games but Fight Lab is a series of mini-games that will teach the player how to play the game.
The topic of Tekken x Street Fighter came up as well and they made it clear that it wont use the same engine as Tekken Tag Tournament 2. Harada said TTT2 uses a very specific engine and they are working on Tekken x Street Fighter from the ground up.
Lastly, they mention that will continue to support the arcade scene in Japan. Since Namco owns their own arcades they have a large stake in the arcade scene and have no plans to abandon it.
Check out the full interview after the jump!