According to U2.com, Looks like the pre-sale for these shows is scheduled for Tuesday March 24th @ 10:00 am.
U2.com > No Line On The Horizon Tour Pre-Sale
Please use this thread for general discussion about these shows and your experience in the pre-sale.
U2.com > No Line On The Horizon Tour Pre-Sale
Please use this thread for general discussion about these shows and your experience in the pre-sale.