Yes, it's part of the TB3 spec which is coming with Skylake.
New MBPs are almost certainly coming. MBA won't be this year.
edit I just remembered the 2015 MBP came out not long ago, I should know because I helped my dad buy it. I think iMacs will be the first to get Skylake.
Yeah...the 15" got updated in May and the 13" got updated in March.
I mean...it's certainly possible for them to do a spec bump now that Skylake is out, but I definitely wouldn't expect USB Type-C or anything major as an update to its shell until next year.