There are 3 new designs that have been showing up recently. Happy Holidays, With Compliments, and the Flag sheet. So far, the first two, which were announced in Bulletin 46, have only shown up with a June 29th, 2010 printing date. These sheets were released on August 25th, 2010.
However, the flag sheet, despite being the newest addition to the generic sheet world, has already had 3 separate printings. The first printing was August 19th, 2010. This was followed up with a second printing on August 27th, 2010. This second printing is a bit unusual, in that instead of having 12 stamps and 12 blank labels to be printed with a design, it has 12 stamps, plus 6 different labels with designs for Jerusalem 2010, and then 6 blank, customizable labels. The third printing was for the bicentennial of 4 Latin American countries (Argentina, Chile, Columbia, Ecuador, and Mexico). The sheet was printed on October 25th, 2010, and issued on November 22nd, 2010.