What are the key differences between the Canon Rebel T2i (EOS 550D) and its successor models in terms of features and performance?

The key differences between the Canon Rebel T2i (EOS 550D) and its successor models lie in improved features and performance. Successor models typically offer higher resolution sensors, better autofocus systems, faster continuous shooting speeds, improved video capabilities, and enhanced connectivity options. These advancements result in better image quality, faster operation, and more versatility for photographers and videographers.