After Graham Siggins became the 2nd person ever to solve a 10x10 blindfolded, DianSheng sent him their magnetic 11x11, obviously with the intention of getting him to solve it blindfolded. In the 10x10 stream he said he wouldn't try 11x11 BLD right away but wanted to do other things such as 2x2-8x8 blind relays, however, it seems that receiving the 11x11 made him change his mind quite quickly. 

Currently the only person who has ever solved an 11x11 blindfolded is Enoch Gray and he did it all the way back in 2018 when hardware was far worse than it is today. Every attempt Graham Siggins has done so far is significantly faster than Enoch Gray's success but so far Graham Siggins has not managed to successfully solve it blindfolded, he did manage to fix a pop blindfolded though!

It took him 86 attempts to solve the 10x10 blindfolded so I am sure he is hoping that it won't take anywhere near as many attempts to get the 11x11 blindfolded success. Then DianSheng might just send him a 12x12 and he can try to solve that blindfolded - something no one else has ever even attempted!

After Enoch Gray solved the 11x11 blindfolded, he tried to do 13x13 blindfolded, possibly because there wasn't really a 12x12 available on the market back then, he did 4 attempts but all were DNFs and it seems that he has given up on trying now, I suspect Graham won't give up so easily though!

Here is Graham's 6th attempt which was the closest as of writing this: