The six new varieties include some knock-offs like frosted flakes, berry loops, vanilla o's, and waffle crunch. But, there are also some innovative flavors like cocoa cinnamon crunch and strawberry and creme. The emphasis in this brand seems to be on value. They are priced well, and they want consumers to believe that they have good nutrition value too, packed with vitamins and minerals but lacking high fructose corn syrup (although their sugar content is on the high side).
In any case, this is an interesting move from Post, who desperately needs to reinvent itself. These cereals should stand out, although I haven't seen any formal marketing campaign yet. Post appears to be taking its future seriously, and this is a good example. In addition, they have also made some other changes with a revised logo and visual identity, plus the launch of postgoodness.com, an online social site that encourages consumers to share positive intentions for their day. All in all, Post may be on the right track.