FWIW my wing list from last week (therefore probably yours too) is basically identical to airguy's, different order but the same stuff.
I sort of hope not. I should have my wing kit on site this week, thanks to you I just noticed that mine also shows subkit 1 as back-ordered. Well, it won't be the first time I went off sequence to work around missing items. If nothing else there are a lot of ribs to prep.