Her staff tweeted 10th July that she will give birth soon.
And her FC got the news on 18th July, her offical site a day later.
So she delivered in between those dates.
There aren't any pics out nor the name of her son.
And I highly doubt we get anything; it's private.
Remember Ai Otsuka and her daughter... she's about 1,5 year old now and fans still don't know the name.