Movement skills have been adjusted across the board so that the various options aren’t quite as unbalanced; things like Flame Dash and Lightning Warp have been upgraded, while Shield Charge is no longer affected by local weapon speed changes. There are also several minion passive changes to balance that gameplay style. Take a look through the full rundown of changes to get at least an early idea of what you’ll need to tweak in your build when the patch goes live later this week.
Path of Exile should be out on Friday, but players who love examining patch notes will have to wait a little while longer for those. Still, the developers have helpfully put together a summary of the big balance changes arriving with the expansion, as well as explanations for the changes. Spell Block, for example, has been reworked to use flat sources as benefits, hopefully making the stat available to everyone rather than making it super-powerful for builds investing heavily in block and useless otherwise.
Source: Official Site