Roahog:
Firstly, the hook victim will now move in to the position directly in front of Roadhog, rather than just a straight line towards him. There is a cap on how far 'to the side' you can be pulled, so you can't just hook someone, spin 180, and dump someone off a cliff. This part (along with some other bug fixes) should generally make the hook feel more consistent as to where the victims get pulled.
Secondly, the line-of-sight check to see if a hook should connect or not is now checked from Roadhog's position, instead of the hook's position. This basically means the hook can't connect to targets that Roadhog himself can't see.
Lastly, there is a new persistent line-of-sight check back to Roadhog once the hook has landed. If this check fails, the hook breaks off and returns to Roadhog. This means if you get hooked and move out of LOS quickly (either you dashed, were falling, were pushed, etc), the hook will now break early and not pull the target.
Overall these changes will likely make Roadhog a bit weaker, but we'll evaluate his performance once we get people playing him and make adjustments as necessary.
Sombra:
As Kyaw mentioned she originally could do this, but it felt pretty broken to fight against it, especially as Zarya or Reinhardt. Sombra isn't in a super terrible spot but I agree she could use a bit of a boost.
Basicamente el gancho ahora sera mas realista y no se podrá tirar a gente con él. A sombra a lo mejor la suben pero no es seguro.
Baya, parece que yo tenia razon con roadhog :S