Since I posted recently about a paper by Juliette Blevins potentially linking Malay semangat and its various Indonesian cognates with proto-Oceanic *manaq through the notion of ancestral power (amongst other things), I thought I'd highlight this paper in Oceanic Linguistics from 2007 in which Blevins attempted to demonstrate a connection between proto-Austronesian and proto-Ongan, the reconstructed ancestor of Jarawa and Onge, languages spoken in the Andaman Islands in the Bay of Bengal. The islands are fairly near Sumatera, but this isn't a case of Malayo-Polynesian languages having shifted to Andaman from Indonesia in late prehistory or something like that. The connection is with proto-Austronesian, which is believed to be about 5,500 years old or so. Wiki also has a brief summary of the arguments.
If this is a viable link, how does it fit into our understanding of southeast Asian prehistory? That's the big question. And what does it mean for the link between farming and migration proposed by Peter Bellwood?
Speaking of Bellwood, he has recently published a new book, First Migrants (Wiley-Blackwell 2013), to follow up on his earlier First Farmers. The themes seem to be the same in both books - First Farmers was, at least in part, about migration and language, which is also dealt with in First Migrants. I've read the earlier work, but I've only leafed through First Migrants. It seems that Bellwood continues to uphold the nonsensical and false idea that Indo-European was spread into Europe by the first farmers in the region (alongside the even sillier notion that the first farmers in India were Indo-European speakers as well), and I don't think he has much of use to say about Pama-Nyungan. But his writing is good - quite forceful - and he's such a knowledgeable chap on these topics that, even though I believe he is wrong about a great deal of things, he shouldn't be ignored.