MadOne No, they wouldn’t give that to the Phone 2 first, after they just released the 2a.
From my point of view there are 2 possibilities:
A) The smartphones are built on different platforms and the developers for the Phone 2 still have a few things to do.
B) The Phone 2a is the latest from Nothing. Most people probably have the Phone 1 and have complained that they always have to wait so long for the updates. Which is why Nothing may have decided to give them the update earlier.