The peripheral formerly speculated as "Gem" or "Arc" was today officially unveiled as "PlayStation Move." There was no clear indication of price except that it would be under $100.
From my years of experience following consumer unveils and "target price points," a $99 price for Sony's entry into motion gaming seems likely.
During today's GDC press conference, Sony presented the possibility of three different configurations for Move purchasers this fall: standalone, bundled with PlayStation Eye, and included as a part of a future PS3 bundle.
An official release date and launch lineup should be forthcoming when E3 rolls around in June.
[Pic via Morgan Webb's Twitter feed.]