Sombra thoughts:
She's a blast to play. Her gun is very satisfying to use (mostly for reasons of sound), her evasive playstyle is fun without feeling particularly stronger than Tracer or Genji. That being said, when Sombras realize how powerful there teleport is, she's going to become the new deadringer spy. Her ult is powerful and fun but, also, essentially automatic and easy to charge. 4+ player EMPs is effortless, and the only way to counter it would be to shift your team's entire strategy around it. I would say that its currently the easiest ult to use and the second easiest ult to achieve game impact with. Her skins/voice lines/other flavor is great.
Her gun tho... what the fuck Blizzard. Its literally just the good points of Tracer and 76's guns combined, to the point where I would say right now there's no reasonable situation where you'd pick 76 or Tracer over Sombra. You can put the gun vaguely on the head or body of a squish from a solid distance away (the longest range you'd reasonably fight as Sombra) and consistently take out half their health which, coincidentally, is the point where you get wall hacks on them. I don't know why they think long range evasion characters is an acceptable dynamic. Because its not.
Now to my main, Pharah. It was weird soaring up so high every time I hit space. In practice tho once I adjusted it made 0 difference in how I played. She can't even fly forever without shift, and in general the rule with Pharah is you want to go down rather than up if you're under fire so... what was the point of this change? Anyone, on to the actually significant changes. They buffed D'va, and they added flanking 76 into the game, who can be picked at the same time as McCree. The hack does nothing to Pharah, but the gun... oh god the gun. Its like if Tracer could get her full DPS on you from the ground, that's literally what its like. I'm pretty sure that Pharah has officially gone from "unplayable in competitive" to "unplayable in quick play". Granted I was partied with some pretty inexperienced players while trying this patch out, so maybe that will change.