Good, little late, but not too bad. Now, let's see how quick they can get it tested and into production.
Hopefully, everybody is now convinced PAK-FA is a real project. Still no garantees for the future, but it looks like this will make it as it's not too unconventional, merge the F-22 and a Su-27 and you get this.
Take another look at some YF-23 pictures, I don't think it looks like it at all! Your brain just says it looks like the F-22, but somewhat different, so it must look like another thing that looks like the F-22, brain says that'd be the YF-23 then... it's very different!
Sure, it will end up looking a bit different. But don't expect too much change yet, it's a two-staged program, so I think there will only be little refinements, the bigger changes will be postponed for the second stage. Also, a lot of basic components won't change until stage II.
F-111C/C, I'll get back to you on the 117S, it should have finished all testing now or about too, but I don't know. I agree that it probably is not in production yet, and I don't expect it to until next year. On the T-50, they are definately not the "orignal AL-41", it's more likely they are AL-31F, that's probably what you meant. But like I said, no idea and I'll see what I can find. Like SukhoiLover said, it's pretty normal to rely on proven, baseline engines for the first prototype, especially for Russian manufacturers, even if there were substantial differences. The 117S is pretty much an uprated AL-31F, so no problems this time, I don't see a reason for big T-10 like (Su-27) changes... On the other hand, 117S test engines might already be at a point in testing that they were fitted... pre-production examples.
SukhoiLover, no, but that doesn't mean it won't get a gun...
I don't see much room for internal weapon carriage...