ConcreteFX have updated Adder to v1.3. They also recently released SynthPack3 which contains Adder, Brush and Digital (Additive, Phase Shaping and Comb Filters synths) for $117/€95/£65, a saving of more $50 on buying them separately.

Changes in Adder v1.3:

• Completely redesigned GUI [screenshot].
• Small bug fixes and improvements.