Great review! I actually work at the Jewish Publication Society, and couldn’t help but notice your comment that “a quick search on the internet turned up no information about the possibility of future volumes.”
Well, I thought you might like to know that the next book in the series, Leviticus, is set to be released in October (http://www.jewishpub.org/product.php?id=327). Translating all of Miqra’ot Gedolot is a big project, but Michael Carasik is making his way through it steadily.
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