Tamron is teasing the launch of a new lens. I have no reliable specs but I just got this from a completely new source (this means it’s not reliable info yet):
28-75mm F/2.8 Di III RXD (Model A036) for Sony E-mount (35mm full-frame)
I repeat it: I have no confirmation yet if this is indeed a new Tamron E-mount lens. But let’s hope this new source is spot on! Thanks source :)