also Am I still right that by this month we are getting (if everything goes right) the normal mode and then during the next weeks/month the Hardmode?
Don't know if hardmode is coming that soon. With Buildcraft out of the picture this time around, you lose the assembly table. That was a major mechanic of Infinity's hard mode. I would imagine the team is going to have to make some modifications to the progression path, and that will take time. How much time is anyone's guess, but I'm tempering my expectations. Just going to enjoy normal mode and get a good test run in. Look for any glaring bugs and see how the performance is.