Yes, if you have the v9 install and apply your express account login when you install it, then you end up with v9 express. So that establishes that alibre must intend to release express as version 9, but they have not done so officially.
I guess they might after the xpress design contest is complete (for the remarkably small number of people who are interested, most of whom seem to be only interested in "dirt bike stands"! :lol: ).
However unless you do an alibre trial, or have an alibre full licence, you don't have the v9 intall file. You get the v8.2 install file instead at the moment.
So if you want to send your design to someone outside the Alibre community, you should be abvle to say , download and install ADX and you can open the assembly/drg/part. But currently it won't open your v9 file which is a pity.