Congrats!
And thanks for the notice.
58 was our guess of the threshold from former TLs rising to C. Your case proves differently, moving the prospective number to 59 (or 58.5?) It would still be logical,
61 for L, 60 for TL and 59 for the new C tier.
OTOH, it would call up a much bigger number of prospective Cs from their TL average. It was around 550 for 58 ave., now it looks as if more than 50% of TL might be eligible?