Solo and Flex queue will probably not have desynchronized bans, though - Snake Draft is only really useful if you can ban against a known enemy team and are in a coordinated environment where people make useful teamcomps
In solo queue, you usually want to ban what you don't want to play against, as you cannot know if the enemy has a specific teamcomp in mind with their picks or are just picking the champions because they like them. Also, imagine the following: I am the bot laner and heftily dislike playing against Caitlyn, but I am fourth pick. With snake draft, the enemy bot laner could pick her (if he is one of the first three picks) before I had a chance to ban her, effectively rendering my ban wish moot.
That is why I suspect solo queue and flex queue will have a system where there are 5 bans per side, followed by 5 picks.