Yes, sorry... I saw "Vostro 15 3000 series" in the body and missed "Vostro 15 3510" on the illiustration. So 22H2 is definitely supported... but whether or not it's offered in Windows Update, you can upgrade via the Installation Assistant or installation media. No need to wait.
Hi, My laptop is Dell Vostro 15 3000 series. Now my laptop windows version is windows 11 21H2. According to Windows 11 release information, Windows 11 22H2 general Availability Channel release date is 2022-09-20 (YYYY-MM-DD).  Why does my laptop not receive update windows 11 22H2 version? Thank for your answer.................  
Windows 11 22H2 Update