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Rockstar Games DDoSed Heavily By Players Protesting New AntiCheat Code
(cyberinsider.com)
This is a most excellent place for technology news and articles.
Depends on your country/jurisdiction. Consumer protection is weak in the USA, but much stronger in some other countries. It'd depend on how much it changes the experience. For example, if you buy a product because it advertises a particular feature, but then the manufacturer removes the feature in the future, that can be a reason to get a refund, at least in Australia and some European countries.