Of all the past and current Batwoman got a new lead with Javicia Leslie taking over for Ruby Rose to launch season 2, the entire Arrowverse slate is getting a massive shake-up this year.
the Arrowverse by doing an antihero show.
While it's highly unlikely that another Arrowverse show is ending this season, too, the line-up is definitely changing big time. Tyler Hoechlin and Elizabeth Tulloch become main players in the Arrowverse. As Supergirl and Black Lightning are ending, what Arrowverse show might end next? When it comes to The Flash, it will kick off its seventh season in March as currently the second longest-running Arrowverse show following Arrow, which wrapped up last year after eight seasons. However, The Flash is currently the highest-rated draw on The CW and it's very likely that the network will try to hold onto it for as long as possible.
Series lead Grant Gustin revealed last year that prior to the global pandemic, negotiations had begun to extend his current contract for a potential Bart Allen. Should Gustin and the current cast feel ready to wrap up their run on The Flash, the series could always continue by following a different speedster.
As long as the fans are still invested and tuning in for the show, the CW would very likely do everything they can to hold on to the Arrowverse drama. If Keiynan Lonsdale's Kid Flash taking on the mantle and protecting Keystone City or flashing into the future by focusing on Bart/Impulse, there are ways for The Flash to continue for as long as possible. If the ratings continue to show that there is still an interest to see the fastest man alive, it would add something new to the Arrowverse as The Flash would become a legacy series.