December is very possible based on the folks at etre picking it up and listing it for sale in January.
If by hand writing, you are referring to this, I believe it to be their first time hand numbering bottles xxx outta 650 for these single (dry?) hop’d versions. In the pic below for example, this one is number 585 of 650.
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My tongue must be broken from not drinking much this year because my opinion is opposite for the 30th anny. I mean, I dig it too and its pretty hard to describe it but I would say it is quite bitter...like what id imagine its like to put pine tar in your mouth or attempt to drink dandelion sap. Its also more boozy feeling and has a very plain/typical/clean saison yeastiness with the usual suspects of clove/bubblegum and cracked pepper.