Endangered Language Alliance
Neo-Mandaic can be considered a dialect of Aramaic, a Northwest Semitic language which was once widespread across the Middle East. As such, it is the only known form of any of the classical literary dialects of Aramaic to survive down to the present day. Two surviving dialects of Neo-Mandaic have thus far been documented, that of Ahvāz (in Macuch, 1965a, 1965b, 1989, and 1993), and Khorramshahr (in Häberl, 2009). These dialects are mutually intelligible to the extent that speakers of either dialect will deny that there are any substantive differences between the two.
(adapted from the Encyclopedia Iranica)