TTArtisan announced this new tilt lens you can buy on their worldwide store, Amazon US, Amazon DE, Amazon UK.
SonyAlphaBlog reviewed the lens and concluded:
The AstrHori is providing sharper images than the TTArtisan and suffer less from CA or flare issues but with TTArtisan you have more control on the tilt effect little bit better color and smoother background blur.
Depending on what is more important for you , you may prefer one or the other