Halo 5: Guardians has an ongoing set of patches and changes that aim to bring the game to a balanced state before the HCS Pro League Summer 2016 Season. 343 Industries has been patching the maps for the whole week now, trying to find the right numbers as well as a game balance. At the official website, you can find a list of changes. The list of changes is divided into two parts. The first part, named Version 1, includes all changes that are made. On the other hand, the second part, named Version 2, includes only changes that were made "today", on the news day. As the game is being patched each day, the developer tries to make patch notes simply and easy to understand.
The ongoing balancing patches are scheduled to end on May 23. Read more about the preparations to HCS Pro League Summer 2016 Season at the official blog.