now, there is some rumours that a warhammer 40k version 5 rule book will be comin out in the (US) summer of 2008, this is quite true and will be released just after codex:deamons
There's not much in the new edition that is going to be radically changed, the things which will be modified for sure are:
1) rules about vehicles
2) damage chart for vehicles (MAYBE we'll have one only chart for glancing and penetrating hits, with modifiers according to the weapon which scored the hit - note that this is an uncertain rumour)
3) rules about psychic powers
4) small variations on HtH combat
It has been speculated that the new Starter Box will include SM and Orks (both in plastic).
any thoughts on the matter?