None that I have seen. S&W seems to generate less leaks than many other gun makers do so there could be something new coming next week we haven't heard about.
If you are willing to settle for speculation I think the new trigger in the Shield plus will eventually become standard in all M&Ps. And there are always new variations with optics cuts, different colors, etc. But aside from that "If it ain't broke don't fix it" will likely prevail.