I recently received this short note in email about some work done in the cuneiform sources regarding Nibiru:

Dear Dr. Heiser,

I have analyzed the extant cuneiform evidence in the peer-reviewed publication “The Marduk Star Nebiru” (CDLI Bulletin 2015:3).
I conclude that the hypothesis that the name Nēbiru may be assigned to any visible astronomical object that marks an equinox is supported by cuneiform evidence.   It is clear to me  that Zechariah Sitchin was confused by earlier translations.
Immanuel Freedman, Ph.D. SMIEEE
Member, International Association for Assyriology
CDLI = Cuneiform Digital Library Initiative at UCLA.  The article / PDF at the above link is their bulletin. It’s only four pages, and of course verifies what I posted many years ago, that cuneiform tablets do not have Nibiru as a 12th planet beyond Pluto.
My thanks to Dr. Freedman for this notification and link!