This is not the first time this rumor came up. The very first Orbis/PS4 leak from March 28, 2012 said it would have anti-used games measures built in:
http://kotaku.com/5896996/the-next-playstation-is-called-orbis-sources-say-here-are-the-details
Since then:
1) A GAF user discovered a patent for for suppressing second-hand game sales filed on 9/12/2012 by SCEJ (
thread). Of course lots of patents are filed and never used so this doesn't necessarily confirm anything, but it shows Sony were researching methods for doing this just a few months ago.
2) All the other information in that initial Kotaku PS4 leak has since checked out (Holiday 2013 launch, no backwards compatibility, etc)
3) Sony spokesperson in February after the PS4 reveal responded they "will have more information to share regarding used games later this year."
4) EA dropped their online pass just recently, probably cause the new consoles handle this for them
5) The Microsoft rumors became true
6) Geoff Keighley says his sources told him something similar
7) Sony insider on GAF said this was indeed in the works but may have been put on hold Friday after all the Xbone backlash
The rumors haven't been as frequent as Microsoft's but there is quite a bit of evidence pointing to them doing the same. That's why tons of people are tweeting Sony executives right now.