There is nothing definite as of yet. Think we were all hoping for a few festival dates this 年 but nothing has been announced; they just played the one song at the MusiCares ギグ to honour Young back in January.
At the moment they are working on songs for their new album and about to go into the studio to record it at some point- when varies! Blackie Dammett (Anthony's father) made a 最近 FB update saying that they would be touring in about a year's time.
I run a RHCP forum/news site (www.thechilisource.com) and we update with all of the current news and we will definitely post any tour dates if they are announced!
