A little while back, Udon announced plans to bring Rockman manga stateside in the fall including Shin Ogo's Rockman ZX adaption:
" Also this fall from UDON comes new Mega Man manga brought to you straight from Japan! Initial titles will focus on the adventures of the original Mega Man and also Mega Man ZX, the latest addition to the core Mega Man universe. More details on these and other titles will be coming soon. "
Bear in mind, this is a rumor. I'll keep you up to date as news comes in.