*UPDATE #2*
It's back! We missed you.
*UPDATE*
The EF-S 17-55mm f/2.8 IS has completely vanished from Canon USA's EF Lens Lineup. The product page does still exist though.
Original Post
Readers on our forum have noticed that the product page for the Canon EF-S 17-55mm f/2.8 IS is no longer linked from the Canon USA lens lineup page. The product page still exists on all of the other Canon sites I have checked around the globe.
We imagine it's just a mistake on the Canon USA web site and we expect to see the link fixed soon. Although, a cheaper STM version of this lens would definitely be a welcomed addition to the lineup as pointed out in the forum.
cr