GGSPN, Any info you get would be helpful. Can you confirm that there are now 10 rows of business seats?. If yes, thats quite a change from the normal GS config with just 4. Jumping from 24 to 60 seats doesnt make the business experience quite as exclusive as the people paying for it will be expecting.
Very rough guide to seat pitch, if the seat is 50" you should be able to sit comfortably upright and stretch your legs out in front of you without the sole of your foot being able to touch the bottom of the seat in front. If it can, its not 50". with 38" the seat in front should hit your shin