Right now, yes. Xbox is working to make XBL titles compatible with the ONE but nothing is confirmed as of today. Since they still selling 360's I wouldn't expect 360 titles to be BC until 2015/16 at the latest to my estimates. PS3 titles will never be BC because sony has there plan in place (Gaikai) so BC would defeat the purpose of it. What I do know and like is the fact M$ has already come out and said they won't be doing a Gaikai style service which means when its time to counter? BC would make Gaikai look like a horrible idea. Which it is unless people are dying to pay for games they already owned

There is no PS+ for PS4, the + for PS4 is the additional charge for online play. They don't even have any games for the system, how they gonna give away launch titles for free? Or do you think they'll wait 3mnths then give there games away for free?
If not, then stop "thinking" you getting shyt for free on PS4. Especially in the first 2yrs when companies are trying to make as much $$$ as possible. The only thing you should be concerned about right now is will PSN be worth the $4 a month. You'll rationalize it, but will the service be any better than current XBL?
You wish you knew that answer, but lets change the subject
Bruh, you saving a whopping $100 on your PS4, go buy those 3 games you frugal PSN loving buster triiiiiiiiick