[bemusedthrow75]

It's a pre-order even on Amazon. The publication date for the book isn't until later in the year (at least for the edition available in the UK, which will probably be the same):

https://www.whsmith.co.uk/products/think-python-how-to-think...

https://blackwells.co.uk/bookshop/product/Think-Python-by-Al...

(Blackwells think September, incidentally, whereas WHS think the end of July)

Amazon just list books way, way earlier in pre-order than a lot of places.