From what I understood from the page, we don't get a selection of five members from each region. Only the top two from each region go, and then they will just create two teams of 5 players each, each player from 1 of the regions.
Which is why I am not sure all the above posters are quoting "all-star teams" from one region. It doesn't appear to work that way at all, unless I'm missing something.
Two mixed-region teams will be created from the pool of ten players, with each team featuring a player from the NA LCS, EU LCS, OGN, LPL, and GPL.
Note that this is not "five teams consisting of the highest-voted players from their regions", which is what the rest of the thread is assuming.