A new publicly readable committee forum is now available on the Forums page:

SG8 : Concepts Near-term focus is on a convergence between the static if proposals and the parameter-type-constraints subset of concepts.

Note that this forum is for standardization of a new feature; do not expect the features mentioned in this forum to be available yet in your own compiler. However, if you're interested in seeing the shape of the feature as it advances to being approved by the committee likely in the near future, this forum is for you.

For information about this and other SGs, see also: