referring to the previous page in this thread, i HIGHLY doubt honda is going to be redoing ANYTHING with the powertrain on the SI for 2013. the k24z7 is basically a "new engine" in a sense that it has the inegrated exhaust manifold (so no header technically) and the new ECU, i'm not even sure if all the other k24 parts from the z3 are compatible (there's a thread, i'm too lazy to look) but it's more than just a "new ECU" in relation to the previous TSX engine.
and if it ain't broke don't fix it is what i'm saying... aside from some random clammoring people, most of the reviews of the civic SI don't complain about the engine (save for the rev hang issue) they continue to praise it as a great, rev happy engine, though they do say they'd like 15-20 more HP, which can be achieved with boltons/etc once flashpro is out imo