GLSL 3.3

I’ve been reading the Orange book (v2) in order to get more familiar with GLSL and just noticed on the wiki GLSL 3.3 will be being used by TD soon. I noticed there will be significant changes in how shaders are written. Will there be the ability to use 1.2 shaders when 3.3 GLSL in TD comes out? Also any idea of when it will be available? I imagine it’s probably a good idea to still learn the older specification to have a foundation for 3.3?

1.2 shaders will continue to work when we add support for 3.3. 3.3 mostly just makes things much nicer/easier to work with, but the fundamentals are the same.