Looks like Attila is still being considered the guitarist in NM, but in the meantime he's playing in a Pantera cover band in Hungary:
http://www.roadrunnerrecords.com/blabbermouth.net/news.aspx?mode=Article&newsitemID=161140
http://www.roadrunnerrecords.com/blabbermouth.net/news.aspx?mode=Article&newsitemID=161140