Hopefully the emulation is going to be good, but that is something that people will be able to see soon, hopefully some review units are out and reviews come out fairly soon as this will be a big thing, whether the emulation works properly as advertised. I wasn't around for the PowerPC to Intel days with Rosetta so don't know what to expect.
Sadly Apple doesn't send pre-release review units to the people who actually review them property and put them to real tests. It will just be YouTubers at first who will always say it's great. But yeah, information will begin to trickle starting next week.