Android O is getting an Autofill API [0], which should be very useful for apps like LastPass.

[0]https://arstechnica.com/gadgets/2017/03/the-android-o-develo...

I use their webapp but it's really frustrating to have to copy+paste all the time from a browser tab. Considering people have been asking for a linux client for a few years now, you'd think they'd find some time. Then again their windows app isn't really polished either.

Not supported no, but you can use the 1password DB with other tools[0].

0: http://www.lucianofiandesio.com/1password-in-linux

That's too bad. I'm using LastPass because I need multi platform (Linux, iOS, macOS, etc) and multi browser support. And it has very useful features such as sharing and emergency access.