Ah hah! So its Stefan Leadbeater, not Stephen Leadbeater. Cute kid. And he already got a solo! Says his birth year is 1998. Which would make him 10 or 11.
I Babel Fish translated the more comprehensive reviews and I've figured out that Kavana sang the top notes to Far Away, the ones Tom used to sing, before he sang both parts. It also said that Stefan had a very "clean" Salva... apparently he has a sweet voice! She said that Alex has a similar voice to Sam and that Kavana's voice is like Tom's. This part was more muddled, but I think she also said that Tom's teachings to Kavana were "transmitted securely"

On the 2nd page: Flynn apparently did a lovely "May The Road Rise Up". She said he has a very cute voice. Freddie and James did a nice job on Prayer to, she said. Their voices are still a little thin, as they are young. The part on Mysterium was a little difficult to read, but I think she said that Ed's voice is stronger now, than it used to be. About Stay With Me: she thinks that Daniel was very nervous the first concert, and it was not as good as the second concert. Daniel was very earnest. No words left for Liam though, on Libera. She said his voice was "enormous", whatever that means! I gather that Stefan does a lot of the high notes, too. She talked about that quite often. The rest of the pages was about the signings, which was much harder to read!