Thanks so much for incorporating Flexbox in the next RSD version
For those who haven't used it – it gives you so much more control over your layout, without having to resort to fiddly floats and hacks. Perfectly center things, change the order of items for different screens...

Will this make it's way to RLM Pro as well?

Merry Christmas!

I just purchased and downloaded RSD v1.2 Is flexbox in this version? I can't find it. Or will it be in a future version?

Flexbox is in RSD version 1.5. This version is in Beta right now, but it will soon be launched.