Quick answer: no. Unless there's a unified effort between major browsers to bring support for a new language we'll have to use js. And that seems highly unlike

Quick answer: no. Unless there's a unified effort between major browsers to bring support for a new language we'll have to use js. And that seems highly unlikely (see dart for instance). However, you now have languages that compile to js, that start to satisfy most developer needs, as well as the sketchy evolution of js.