Due to exceptional demand for tickets, even though we're still in the pre-sale stage, two further nights have just been officially announced for the Australian leg of the Roger Waters 2012 The Wall Live tour, and one additional night in New Zealand.

The Rod Laver Arena in Melbourne will now see a second night, on February 8th, and Sydney's Acer Arena gets a second show too, on February 15th. The general sale of tickets through Ticketek begins on Monday, July 11th at 9am.

The additional night at the Vector Arena in Auckland, New Zealand, takes place on February 22nd. Tickets for that show can be purchased through Ticketmaster. As with all shows, RogerWaters.com are doing limited presales for those who have already registered their interest in particular cities.

Full details of ALL shows next year announced to date can be found in the Roger Waters 2012 Wall Tour zone.

This afternoon, six more concerts have been announced for the Roger Waters 2012 Wall Live tour - in Argentina and Brazil - and they are as follows:

• March 7th & 9th, 2012 - Buenos Aires (Estadio River Plate); tickets on-sale August 8th at midnight 
• March 17th, 2012 - Porto Alegre (Estádio Beira Rio); tickets on-sale September 19th
• March 22nd & 23rd, 2012 - Sao Paulo (Estádio do Morumbi); tickets on-sale September 19th
• March 25th - Rio de Janeiro (Estádio Olímpico João Havelange); tickets on-sale September 19th

Roger Waters, David Gilmour and Nick Mason have all signed a one-off guitar, which is being auctioned in aid of homelessness charity Crisis.

The Fender American Standard Stratocaster guitar has been especially hand painted by Ian Emes, creator of the animated clocks on the 'Time' screen film, and Ian has recreated the clocks on the body of the guitar. With the guitar signed by the band and Ian, this truly unique instrument is sure to raise some decent funds for this very deserving cause.

Click here to be taken directly to the guitar on CharityBuzz.com; the auction opened today and closes on Thursday 14th July at 2:45PM Eastern Time, (7:45PM GMT). If you wish to make a separate donation to Crisis, their Web site is here.

UPDATE: The guitar sold for a very respectable $26,000/£16,025.

Next month, the Aussie Floyd are doing a special show at the Hammersmith Apollo in London on July 17th, which is going to be filmed. People can't buy tickets for this show, it's for members only who have bought tickets for any of their 2012 shows.

However, marking the long-term relationship between the band and Brain Damage, they have set aside six pairs of tickets for the event, as a special competition prize for BD visitors.

To find out more, and to place your entries for a chance to be in the audience for this show, make sure you visit this page at AussieFloyd.com. Winners will be emailed direct by the band's management by July 8th.