Saw this info this morning via Hubstripping. The German cycling website Aktiv Radfahren posted info on an upcoming Alfine 11 speed hub, SG-S700, due in September of 2010 for 300 Euros. Reported 409% ratio, gear steps of 17% and 13%. Article translation is here.
I’ll keep an eye out for more official information from Shimano as it comes.