The wine environment bitness and the client environment bitness are related, but orthogonal.
This wine can support both 32 and 64 bit windows applications inside it. The previous wine could only support 32 bit.
If you’re using this wine on TQ, you are running a 32 bit client inside a 32+64bit wine.
Later today there will be a 64bit mass test on sisi. If you join in, you will be running a 64 bit client inside a 32+64 bit wine.