Mammillaria manana

This is the first of two plants that I bought from a Czech grower in July 2006 for 2.5€ each as machucae. I also sowed seed that year, but these are well ahead. I can see that the centrals are pale yellow, and a few are starting to show that they are hooked. Up till now, they all looked white and straight. There are 7 buds in all, spaced around the body of the plant. It is in a 7cm pot.