Sure you aren’t reading last months? Mine says wait til tomorrow.
As far as I can make out, if you have the NS&I app (so the proper full beans one, not the prize checker one) and you have your preferences that any winnings are reinvested as bonds….
You can see an hour before midnight on the day before standard announcement day, in your transaction history, if you’ve ‘won’ anything.
I can see now for example that I’ve got 2 x £50 pending, and it’s 23:35 on 1st July.
This also means I’ll still be going to work tomorrow.
Hope that helps.