Comment 4 for bug 1658469

apache2 is now stuck in proposed. This is becuase nghttp2 (src package) is in universe, and so is libnghttp2-14 which apache2 depends on when enabling http2. We would need a MIR to promote nghttp2 and given where we are in the cycle, that seems unlikely to be approved. Additionally, regardless of Debian, upstream apache still considers it experimental:

Given all that, I'm much more comfortable aiming for HTTP2 support in 17.10, as anticipatory of 18.04 and will pursue the MIR and needed first thing in that cycle.