Online Japanese retailers are much better at displaying the release date of upcoming toys - grabbed these just from Amazon JP:

September 19
(that was the date, but now it's listing them as in stock!)
Prowl
Sunstreaker
(Encore Metroplex too!)

October 2
Powerglide
Silverbolt
Onslaught

October 24
Sideswipe
Streak
Octane

November 21
Galvatron
Ironhide

Did i miss any?