Lovable Lets You Message It Mid-Task and Adds GPT-6 Astra and Gemini 3.8 Flash as Model Options

Lovable's September 8 changelog adds mid-task follow-up messages that replace the old message queue, lets Lovable sign in to test pages behind a login, and adds GPT-6 Astra, Gemini 3.8 Flash, and Gemini 3.5 Transcribe as selectable models.