Hi shaheen missile
K-5 is not on drawing board at the moment--it was 5 years back--but not anymore. It is under advanced development phases. Unfortunately I am not at liberty to write things which havent been published in open media.Rest assured,K-5 has in fact assumed higher priority than A-5.
Kindly do not take anything reported by "media" as seriously.They are literally dumb when it comes to engineering. In stead one should go by published literature,scientific journals,seminars that regularly take place over this side of the border. In fact I have myself attended a plethora of such seminars and interacted with those involved in some of these programs. As for the MIRV bus though-the complete weight of 200-300kT with all the GNC shouldnt be more than 400kgs--but thats again a guess work published by a guy who knew about these things much more than I do.As i said,I am good with computers and electronics--Warhead is simply not my cup of tea.
Some of my work that I do in my free time is-