Rattrays has been in short supply off and on since I started smoking a pipe. They had some in stock at my favorite B&M, and I fell in love with it. But, I could never find it in bulk at one of the sponsored websites, so I signed up to get an email when the bulk came in stock. It took about a year to get an email, and when I did, I had forgotten that I had signed up for it. But, I did order as much as I could afford at the time, and I am glad I did.
I don't think this is new, it comes and goes. Good stuff, and worth waiting for. But, if you wanted a tin to just try it out, you might try calling some of the B&Ms to see if they have a tin or two. I have some Hal O the Wynd open right now, and it is a very nice Virginia and fire cured blend with a healthy dose of nic-kick to it.