source: nirvanafanclub.org via ONTD:

Former Nirvana guitarist Pat Smear will re-unite with Dave Grohl and the Foo Fighters for a small acoustic tour in the US. A special 8-piece line-up will perform the live premiere of songs from disc 2 of In Your Honor as well as unique interpretations of favorites from the band's entire catalogue.

Joining the band on the second installment of the In Your Honor Tour are special guests Petra Haden on Violin, Rami Jaffee on Keyboards, Drew Hester on percussion and Pat Smear on Guitar!

Here are the dates announced so far:

July 11 - Seattle, WA
July 13 - Berkeley, CA
July 17 - San Diego, CA
August 16 - Philadelphia, PA
August 21 - New York, NY
August 22 - Boston, MA
August 25 - Chicago, IL