usually i.e from the past 4 yrs apple has been releasing its new generation ipods during the 2nd week of September.
if u can wait till September MAY BE they may release the 4th gen ipod touch.
the new features in 4th gen ipod as of rumor mills is that a camera may b included and may be a more faster os.(these are just assumptions).
3rd gen itouch was to come with a camera(it was confirmed lately by apple ceo) but due to sme sensor issues and technical glitches they couldnt make it.
so if that problem is solved almost sure of having a camera in itouch 4th gen.
now its totally upto u..if u can wait till sept..then its always better to go for latest edition.
i will b getin my 32gb itouch 3rd gen on Thursday
. i am going for it because
1) itouch 3rd gen has everything i need as of now and i am not interested in having a camera in my pmp.
2) i am very impatient and cannot wait till september