Nobody expected a new XCOM game getting announced for this year, and released so quick. And with quite radical changes, developer Firaxis has to temper expectations by stating its a spin-off, and its sold for cheap.
Like an FBI raid squad, XCOM Chimera Squad kicked opened the doors hard, and hits you strong and fast.
Source: N4G PC XCOM Chimera Squad Review: Unexpected But Fantastic At Its Core | Gamer Matters