IIRC the form had options for WKL or WK TX(?)SE, and also had option for 84/87 LZ Iron. I don't know if numbers were ever shared or figured out on how many boards total were sold in this "white run", but from what I can understand in Kin's blog, it's unlikely he's going to do it again due to QC consistency issues. I'm handling my White LZ Iron like it's made of glass, just to be safe! (Where's jimirollin when you need him for some glass stems...)
A quick/poorly lit album to show what kind of white it is (with comparisons to some established keycap sets for reference). Forgive me for the yellow lighting, but I hate fluorescent cool white light at home. (Album)
https://imgur.com/a/MczU4hW w/ePBT BoW for reference
Left to right: ePBT BoW, GMK WeyTec (9009 accent colors), SP DSA HC Granite, ePBT Cyrilic, and top right corner is some assorted GMK Doubleshots (weytec/vintage harvest)
PS: I realize this is an LZ board in TX/Kin thread, but it was "produced" as part of the Kin run. Just giving the details to show the shade of white for others to refer to.