The only upgrade Soldier 76 has received from the original Overwatch is a boost of 10% in his movement speed; however, every other DPS character received this buff, so it kind of evens them all out on the same playing field. But, in the time I was able to play the beta, that 10% increase in sprint speed was very apparent. I will be looking forward to seeing if they choose to buff Soldier 76 anymore in the future and will be actively checking any patch notes.  In the Overwatch 2 Beta, we are also introduced to a new character, Sojourn. She is being heavily compared to Soldier 76 because she is a DPS hit-scan hero. It will be interesting to see how they stack up against one another as more of Overwatch 2 gets released.