Plenty of places will not have a limit.
The amount of places that will be limited to £20 will sharp decrease.
The 9to5Mac article which MacRumors used as the source for the story confirming the £20 limit says that most retailers will have the limit.
However, the usual £20 limit on contactless transactions does apply … for the time being. When Apple Pay launches in July, almost all merchants will only allow Apple Pay purchases up to £20 …