Ever since the unc0ver jailbreak picked up support for iOS 13.0-13.3 with Brandon Azad’s oob_timestamp exploit (and more recently, Jake James’ time_waste exploit), this support has been limited to A12(X)-A13 devices. Pwn20wnd was rather noncommittal with regards to adding support for A8-A11 devices since they’re already supported by the bootrom exploit-based checkra1n jailbreak, but that could now be on the verge of changing.
According to Tweets shared just this morning by Pwn20wnd, it seems that support for A8X-A11 devices on iOS 13.0-13.3 is very near to becoming a reality: