The Dark Horse mini metal figurines were the first TMNT licensed product. Below is an early advertisement. This ad appeared in a handful of the Eastman and Laird comics - this particular scan comes from the second printing of TMNT #2.

13 new episodes of the TMNT cartoon are now in production for broadcast in the fall of 2008! After months of back-n-forth, all partners agreed on a new direction and the Turtles toon is back on the hot track! We can't reveal any specifics yet, but everyone's favorite Gang Green will be returning to present-day NYC and battling the baddies with their buddies Casey Jones and April O'Neil! This next phase of the show will feature new art direction that will tie the 2003 toon designs into the animated movie style by Imagi!
This holiday season, Hot Topic will unveil boutiques dedicated to the TMNT retro merchandise and apparel. Hot Topic will have some exclusive items that feature artwork of Krang, Bebop and Rocksteady and will be an ideal place to find the retro merch!
Kurt Adler will be producing Christmas ornaments that will be available at Wal-Mart this holiday season!