I think it may be about 2 years before the games industry even starts to pick up Rust (or possibly a post-Rust language instead), but I think it will happen eventually.
As someone else mentioned, C# is a big deal now and comes with a degree of safety over C++. I don't expect to see Rust in the pole position on the whole, but it could easily displace C++ at Id Software since Carmack has been shopping for an alternative, and elsewhere (especially if he runs with it first.)
But I think C++'s share is losing ground, and Unity is an impressive platform. The asm.js buzz seems to whisper promises about ES and browsers becoming a serious AAA gaming platform. If FFOS gets anywhere it may supply the necessary voltage. So the lay of the land is anyone's guess, but all the variables eat into C++'s % share even if only by expanding the market around it.
As someone else mentioned, C# is a big deal now and comes with a degree of safety over C++. I don't expect to see Rust in the pole position on the whole, but it could easily displace C++ at Id Software since Carmack has been shopping for an alternative, and elsewhere (especially if he runs with it first.)
But I think C++'s share is losing ground, and Unity is an impressive platform. The asm.js buzz seems to whisper promises about ES and browsers becoming a serious AAA gaming platform. If FFOS gets anywhere it may supply the necessary voltage. So the lay of the land is anyone's guess, but all the variables eat into C++'s % share even if only by expanding the market around it.