With the rotate of Magic 2014, all sanctioned formats as well as the group that oversees the Commander format announced their updates to banned and restricted lists.
The following changes are:
Standard, Extended, Modern, Legacy, Vintage
Functional Errata and Relevant Rules Changes
Because they were being very proactive in the changing of the Legend Rule, the core set rules changes were already spelled out ahead of time. No additional changes were announced.
The explanations of the non-Commander Banned & Restricted changes can be found here.
The Commander announcement can be found here.
The full list of rules clarifications can be viewed here.