For those not watching the compiler development traffic, macros 1.1 (which will enable things like #[derive(FromForm))]) could land in stable as soon as 6 weeks from now. We haven't really started thinking about a "macros 1.2" yet, so syntex will still have some use.
If you want to know more about our glorious macros 1.1 future, David Tolnay just have a great meetup talk all about this a few weeks ago:
If you want to know more about our glorious macros 1.1 future, David Tolnay just have a great meetup talk all about this a few weeks ago:
https://air.mozilla.org/rust-meetup-december-2016-12-15/