There are roughly a gazillion reviews on YouTube today with the new devices. Everyone's pretty happy with them so far. The Ezarek girls (Jenna and Justine/iJustine) both have reviews up, Sarah Diestchy has a review up, and so does just about everyone else in the world who has any kind of a relationship with Apple. They could probably cut the price in half if they didn't give so many away to online reviewers. Pretty much every tech reviewer, camera reviewer, video creation site, etc. got free copies to play around with and tell viewers about the new devices. I haven't counted the reviews posted today, but I'm guessing we're at or over a hundred so far.
There doesn't seem to be a huge performance difference between the Air and Pro, but the Air has no fans so if you're doing demanding stuff like video editing and it gets too warm the CPU will throttle to prevent it from incinerating, which will naturally slow things down a bit. Sarah Dietschy was a bit disappointed in the lack of native apps for the new laptops. For much of her stuff, she had to download the Rosetta 2 app and some of the programs were pretty sluggish using it. They still have a larger bezel around the screen than the Dell XPS that she typically uses and the new Apple computers don't have the touch screen that the Dell has.
By and large, the people reviewing them seem happy with them, but the people reviewing them now got them for free, so what's not to be happy about? As with any new product, give it a few weeks and you're apt to know more about how good or bad the product really is. Check out some of the non-Apple fanboy/fangirl sites too like Linus Tech Tips and their related sites to hear more of any negatives than you'll get from many of the more fanboy/fangirl type reviewers. The non-fanboy/fangirl reviewers don't typically get them for free, so they have to wait until they hit the market and buy one themselves, so their reviews are often a bit later hitting the media, but can be more balanced. (Or not.)
Fly!!! Eagles!!! Fly!!!