You could certainly add it as an RPG Item on the RPGGeek side of things.
As to talking about it, aka self advertising, I suspect not. But, with an RPG entry & picture, you could also see to it that it gets reviewed, played with a session report, and added to certain geeklists about gamebooks, all of which would generate a certain level of buzz among those interested in such things. You could also fill out a designer page for yourself.
I think announcing that it's available on Amazon is allowed if you do it in the Press Releases forum. People announce their own Kickstarter campaigns and the like there all the time.