Well, if the game Auto-Patches and the changes are more or less minimal such as :
*Better compability / performance with some hardware.
*Fixes on minor bugs (such as text errors, some texture problems etc).
*Fixes on gamepads , joysticks compability / handling etc.
Then it wouldnt matter much if they give you the release notes or not, however once they are changing core elements of the game (such as certain weapons getting removed some buffs etc) then you really should now so you don't end up on the short end of the stick.