I'm not seeing any talk of a potential 5th generation rMBP.
Here are the revision dates of the MacBook Pro with Retina display so far:
June 11, 2012 1st generation (rMBP released)
October 23, 2012 2nd generation
February 13, 2013 3rd generation
October 22, 2013 4th generation
Mid June, 2014 5th generation?
(Source: Wikipedia)
WWDC 2014 runs June 2-6, 2014, and I'm guessing we'll see a minor spec bump announced and released soon after.
Here are the revision dates of the MacBook Pro with Retina display so far:
June 11, 2012 1st generation (rMBP released)
October 23, 2012 2nd generation
February 13, 2013 3rd generation
October 22, 2013 4th generation
Mid June, 2014 5th generation?
(Source: Wikipedia)
WWDC 2014 runs June 2-6, 2014, and I'm guessing we'll see a minor spec bump announced and released soon after.