5 + 6 = 11
p2 = 1 + 1
Perl 11 is an umbrella name to start separating perl5 into pluggable parsers, the AST (currently only the optree, in mem or serialized), and the vm/runloop.
Then to allow multiple pluggable versions of each of those (concurrently).
This is all doable already without p5p.
The AST might be serialized from/to .pmc (readable by perl already), .pbc, .class and so on, depending on the used vm.