today (Aug 1st) was only important when BIP148 danger was a thing but since SegWit adoption grew to a complete 100% there is no longer any danger and nothing important.
there is only 1 change today and that will be the fork called bitcoin cash. the importance of this will be shown after a while (probably a month from now). and how the price, the mining, ... will react to it. for example it is interesting to see which miners will support this fork for real and why would they do it when they would be losing money.