I also noticed that the visual effects have changed, as have the sounds when abilities are activated. You can connect to the Conflux at any time, not just at the start of the game (I think this is a significant plus). The amount of experience gained has decreased, but so has the amount of experience required to level up. According to the official website, the fastest experience coefficient is now 2 instead of 7 or something like that. When I enter the Dolmen of Knowledge, it gives me 5000 experience (previously, on the fastest setting, it was 7000, I think), and I immediately level up to level 4! So, in single-player mode with an experience coefficient of 1, the hero's level should increase at a normal rate, and maybe even faster than needed.