You may find it was 42c with 650b wheels
Maybe so, but I found pictures of someone running one with 700x35 and it looked fine, so im not too worried.
If you don't mind, maybe when it arrives you could measure seat stay/chainstay/fork clearance for 650b/700c? If it's decent I predict many of them appearing on the forum soon.
@spotter started
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You may find it was 42c with 650b wheels