It was announced on the 14th...and it sold out in one day.
I have the anamorphic lens on backorder, and I'll probably buy this one. 58mm-e is much more of an everyday angle of view than the iPhone's ~28mm-e, and you keep the wide's faster f/1.8 aperture.
The old "tele" lens had purposefully soft corners, so people who wanted edge-to-edge sharpness had to buy the Sirui tele. No more soft corners with the new 58mm!
Their Youtube channel has a couple videos on the new lens: