A3 Portrait?

I’ve been asked to design something for a “poster”. The biggest size I see in the standard Bloom sizes is A3 Landscape. Is there some reason there isn’t a corresponding A3 Portrait? Could that be added?

This has also been asked for here:

Thanks, Andrew. I just voted on the other request.

@paul_frank You can get test A3 Portrait in the alpha now.

I got it–thanks. Works as it should.