Scott Shoemaker over on Conversion Fanboy has just completed his 7th edition update for his objective markers for Warhammer 40k games. The new update includes objective markers number 5 and 6. Definitely worth checking out if you either have a set of these, or not ever seen them before.
Here is a link to Scott's site where you can find a store to get them.
The best part is that getting this addition only costs $3 before shipping
http://conversionfanboy.blogspot.com/
http://conversionfanboy.blogspot.com/2014/10/objective-markers-5-6-in-store.html