From the http://www.khm.uio.no website:
A new stone with a Proto-Norse runic inscription was discovered on 26 September 2009 at Hogganvik in Mandal, Vest-Agder, Norway. The inscription with elder runes must date to the period of the Germanic tribal migrations, roughly 350-500 AD. With its sixty-two runes, one a bind-rune, the text is the second or third longest from this period of time, following well behind the Tune stone, and about equivalent to the Rö stone from Bohuslen (where several runes are entirely missing/unreadable).
See more here.
Thanks to Markku at Runes of Christ for providing notice about this story.