One thing that worries me with all the big licences IDW have been picking up lately (GIJoe, Star Trek, Terminator, and previously had Dr Who), if Transformers starts to slide too much in sales, IDW have a lot of other big brands to profit from if they wanted to cut back or drop Transformers.
That said, this link is to 5 page previews of some of this month's IDW comics, with the Transformers ones at the end of the page.
http://www.comicscontinuum.com/stori.../idwfirsts.htm