Although it is not clear which Ryzen 7 2000 series CPU has been benchmarked - but the newest leak points to Ryzen 7 2700X - the Hardware Battle site leak, which has been taken down in the meantime but saved by Videocardz.com, shows both specifications as well as some of the first benchmarks for the upcoming CPU.
The list includes details from SiSoft Sandra, AIDA64, Futuremark and Cinebench R15, all showing that XFR 2.0 will bring a significant performance gain considering that the CPU in question goes from 3.7GHz base to 4.35GHz Turbo clock.
SiSoft Sandra benchmarks compared it to some other CPUs, showing that while we can expect a slight performance increase, mostly due to higher clocks, but will put more pressure on Intel's lineup. In SiSoft Sandra, Cinebench R15 and FutureMark 3DMark FireStrike and FireStrike Ultra benchmarks, the unnamed Ryzen 2 CPU managed to even outperform the quite popular Core i7-8700K.
Compared to the Ryzen 7 1700X in AIDA64 at same clocks, benchmarks show that the new Ryzen CPUs will also bring a slight memory and cache performance improvement, which is always a good thing.
AMD already revealed a lot of details regarding the upcoming 2nd generation Ryzen CPUs, including that it will be the first 12nm Zen+ architecture processor, come with higher clocks and Precision Boost 2 technology as well as launch in April 2018.