emerge x11 has the following problem on amd64 and x86 stable: [blocks B ] >=x11-proto/xproto-7.0.6 (is blocking x11-libs/libX11-1.0.1-r1) xproto-7.0.7 is marked stable on amd64 and x86, xproto-7.0.4 and xproto-7.0.5 are stil marked as testing libX11-1.0.1-r1.ebuild (amd64) has RDEPEND !>=x11-proto/xproto-7.0.6" whereas libX11-1.0.3.ebuild (~amd64) has RDEPEND >=x11-proto/xproto-7.0.6" So either mark the older xproto or the newer libX11 as stable.
Already fixed, but thanks for the report.
You forgot amd64 for xproto.
No, it is fixed in CVS. I've already confirmed this multiple times. Your sync just isn't current with what is in CVS.