From frontman Chris Cornell's Twitter on Friday morning:
The 12 year break is over & school is back in session. Sign up now. Knights of the Soundtable ride again!
As good (Edit: great) a band as they were, this news isn't as exciting as we once thought it might be. Not sure if you've noticed, but Cornell's turned into an alt-rock version of George Hamilton in said 12 year break. Stay tuned for 2010 tour dates.