Bit of a vague question. Im assuming youre talking about the pure pitch packets? The pure pitch packets have a CO2 permeable lining on the inside which keeps the yeast healthier longer due to less pressure than they had in the vials. Therefore you get more healthy cells when theyre fresh.
What is your OG gonna be? What yeast are you using? I know with the WLP001 it says no starter up to 1.070. I brewed a 1.068 beer a month ago with no starter and the FG ended at 1.011 and was a nice healthy fermentation. All in all, the new packets are awesome