Why do Minelab hold back, and not tell us date of new coil realease, and what type, and how much .I have the x-terra 50 and for the money is a great midrange detector ,not very deep but adequate in all metal mode ,just wonder what deapth loss the new coils will have,come on Minelab testing in the UK since last September time to let us all know whats going on ,and at the same time ,is this new style of detector will eventually be the format for the explorer111