I’m not following this until it gets close enough to have some kind of a definite presence. Until then there is just too much speculation and too many claims.
Said to have interacted with the ancients and to return every 36,000(?) years or something. Said to be incoming and the cause of soon-coming natural disasters like a pole shift, as has happened in the ancient past. Said to be large … possibly brown dwarf large. Said to be the home of an extraterrestrial civilization probably living beneath its crust, maybe hyperdimensional beings. So it’s like a giant merkabah that houses a whole civilization rather than just one being.
Both the Zetas and the Pleiadians (both purportedly channeled alien races) talk about it.
For lots of photographs, check in on the Earth Changes – Pole Shift blog.