Do you mean as in hardware, like SoC and memory or as in different models of watches? If you mean different watch models, there have been many released over the last six months, mostly by designer models.
Some examples include Mont Blanc, Movado, an updated Tag Hauer Connect, Diesel, Nixon, Fossil and Casio. Seems like the designer labels are all in on AW 2.0. Based on what was announced at Bassel World (the annual big international watch exhibition in Switzerland), there are more coming. Some of these choices are pretty expensive.
I don't think there will be any big hardware changes coming in the near future. The current SoC and hardware configuration is still fairly new.