English isn't your first language and that's okay, but according to the English dictionary, the primary meaning of obsolete is no longer in use or no longer useful. The secondary meaning is "of a kind or style no longer current". Outdated, on the other hand, means to make obsolete.Obsolete or outdated means a lack of full functionality due to the arrival of a new model.
What functionality do you think the MKII has that makes the MKI obsolete?
Do you have MK1?
I could buy an MKII today if I wanted to, but in my case, the MKII doesn't do anything I need the MKI to do, so there's not much reason for me to upgrade.