Good warm up for the USA and likely a selection trial for the last few spots in the WC squad.
A few teams have nothing scheduled yet though. Anyone taking it seriously should have 1 mid season and 1-2 in September-October
May has
Australia vs NZ
England vs Samoa
Tonga vs Fiji
PNG vs Cook Islands
Would like to see England play Ireland and/or Wales before flying over and hitting Australia first round.
Samoa, Tonga, Fiji, PNG would be silly to not play a game before their group matches too. Cook Islands likely up for a game.
France and Lebanon - if I'm running either of these two I want to get a jump on my opponents. Both up against it, 1 game's worth of form could be the difference. Neither have anything scheduled as far as I know.
None of the European nations have anything announced either. Wales Ireland and USA should all be getting a game in the PNG humidty early before the Cup starts or they'll struggle