Mount + Flying question

affluent

If a mount is 8ms-9ms, can it still be upgraded twice to 11?

http://www.ecatomb.net/flight-e.php
also, i know theres the first 5 wings in game right now (For wing elf), so what exactly are the other ones? same with the mounts...

theres lots of cool ones but i haven't really seen them before

thanks