For example, I have two <img> and I want set them "float: top" for left page and "float: bottom" for right page
I attache a scheme

1. untitled (1).png‎ 15.5 kB

Currently it is not possible to apply different CSS rules depending on which page an element appears on. The closest is float: inside vs. float: outside, but that only sets the horizontal alignment based on the position on the two page spread.

It will be possible in the next version?
and when will be the next version release?

It will not be possible in Prince 11, which is due to be released this month.

Thanks!

Oh, btw, there can i watch prince 11 feature list?

The development roadmap has a big list of changes.

And the latest builds, of course!