I have been waiting for this for a long time. The Impossible Project is finally revealing their new polaroid film this week, and making it available on their online store!
http://shop.the-impossible-project.com/shop/film/sx70/fi_sx70_1_px100_ff
Hell. Yes.
That being said. I would like to reiterate what I keep saying: Pick the right format for what you are trying to accomplish... Better yet, always be ready - and carry SOMETHING on you that you are able to snap photos with. You never know when a situation may present itself to you. Even if it is for the mere purpose of documentation or "journaling" your ideas. Just always be taking notes in any form.

David Guttenfelder is an Associated Press photographer currently stationed in Afganistan. Guttenfelder shoots with his normal gear, but he has taken up a personal project - documenting "normalcy" during his downtime. The catch is - he is using his iPhone. I find this fascinating because I have been doing the same type of thing lately. Not so much for professional photography, but mostly for ideas. I have found my photographs to be more natural and dramatic in this form. There are different things that you can do to manipulate your photography with a nice camera, but if you are trying to shoot something that is a little lo-fi why not just use something a little more "lo-fi". Just a thought, but one to seriously consider. Of course it is important to know how to use an SLR and understand how they work, but you should be aware that there are always different ways to arrive at a good photograph or body of photographs.
check out his slideshow
HERE