APT SuSE 10 and 10.1

I probably missed the distinction between 10.0 and 10.1 in the apt repositories. I have 10.0 and have been updated from apt repositories. Could someone give a clue as to the difference? Ed Harrison, Registered Linux User #199533 SuSE 10.0, Kernel 2.6.15 PolarBar Mailer 1.26