I took that to mean that there were big apps to be announced/released in July and they would release new colors as part of the marketing effort.
You are right. Red 928- confirmed , two unconfirmed colors and an unconfirmed color for 822.
(my own opinion) All limits edition devices are tend to be available for a short time to create a hype but in the case of Nokia since both devices are well over their quotas ( 822 #1 mid range seller and 928 a distance 3rd in high end devices) there may be no need of limited edition devices. Since the Microsoft effort/ updates all are software related I am positive you will be able to get the new changes on all lumias