Well they need more than a bunch of announcements to make it something worthwhile.
It is PSP's 10th global anniversary next year, though it was officially available globally from Sept 2005, so that means a PSX in December will miss the anniversary by a few months.
It is also the 20th Anniversary, again, of global Playstation, since it didn't launch in EU and USA until Sept 1995. What would be cool, if they are at a position to be able to do a slim PS4, is if they make a limited edition PS4 housed in the original PS1 case. Though with the CD lid being a flip up LCD screen, so you can take PS4 on the road and not need a TV to use it. If they sell that limited edition for $800 I'm sure they'll make their money back.
About the best thing they can do for PSP 10 year anniversary is announce MH5 for PS Vita. There's pretty much nothing else they can do to make warm fuzzies for PSP / V.
Actually, now that they've hit 20th anniversary of the launch of PS, they can pretty much do a 20th anniversary special edition PS4 every year for something.
1995 20th anniversary Tekken, or Twisted Metal
1996 20th anniversary Resident Evil
1997 20th anniversary Gran Turismo
...
You get the picture.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
