This is my opinion after 24 hours and 3 matches, but I'm taking only 2 into consideration, comparing 2 cup matches before and after the update, and 1 league match.
Yesterday I won a League match 0-8, using the condition bonus and all I could see were my wingers (and some MC) sprinting like crazy and crossing. I was playing against with a much weaker team however.
1) This first cup match has been played before the update against a mostly equal team (68.0 vs 69.1). I lost 0-1 at home even after spectating and even suffering a bit. I even put a third ST in without success.
2) I played the away match today, after the update. I started using a 6% attack bonus without any good result. The assistant said to use possession to gain advantage, so I used the bonus (6%) and a few minutes later we gained the upper hand and we scored. Then we won at the penalty kicks and to my surprise since I didn't even hoping for it!
3) After the last cup match I had an important League match against another equal team (68.0 vs 68.4). Same as before, I used an attacking bonus (6%) without chance, and by the way my attackers are suffering a drought for days now (or even weeks!). After using the 6% possession bonus I again gained the upper hand, and scored a decisive goal.
At the moment it's hard for me to say that the bonus is actually doing something, the assistant is claming that it actually works but many times he also lies :P
It's a bit early, but judging the results, yes, they work since I somehow gained an advantage and speaking about the cup match, I could turn the situation around in my favor even if I was playing away.
The condition bonus was working great against a weaker team however.
I don't know if the attacking bonus would actually work or not, my ST's are kind of abstinent towards goals lately, so I don't know.
What's your opinion? Are the bonus working for you? What are your results?