-With Batwoman premiering in October 6th, promo for the series is in full gear and the latest promo is....interesting.
-Additionally Ruby had to miss SDCC due to "filming" (though Paps state that the show wasn't filming and that she allegedly didn't want to deal with any potential criticism)
-Supergirl/Batwomans friendship will be further developed this year as they are TheCWs "World's Finest" now.
-Batwomans first season is supposed to be a prequel to her appearance during last years crossover so it is not known if there will be a flashfoward to present day by the time COIE hits.
Source: 1 2 3
CW is usually better at promos for their new show....