World of Warcraft has grown so large and ambitious that patches can focus on individual meta-games without even touching the main title. The next patch, for example, will focus entirely on the Pet Battles system, working to reduce randomness in matches.
A post on the Blizzard blog states that the 5.3 update will add a "Hit Chance" for all abilities, giving you more information on how likely you are to strike a target. It will increase or decrease based on abilities as well. In addition, the update will remove the default 5% dodge chance and reduced the higher-level dodge change from 5% per level to 2% per level. All of this is meant to let you more reliably fight higher-level monsters, though Blizzard notes that it also made some slight tweaks to abilities that were left with a 100% hit chance after the other adjustments were made.
A post on the Blizzard blog states that the 5.3 update will add a "Hit Chance" for all abilities, giving you more information on how likely you are to strike a target. It will increase or decrease based on abilities as well. In addition, the update will remove the default 5% dodge chance and reduced the higher-level dodge change from 5% per level to 2% per level. All of this is meant to let you more reliably fight higher-level monsters, though Blizzard notes that it also made some slight tweaks to abilities that were left with a 100% hit chance after the other adjustments were made.