Well, that has nothing to do with Nokia. It is just Google pushing updates in batches. Some users did not receive the Android Messages V3.5 update till now but some others did. So, fear not, the updates will come to you eventually. If you want the new features at the earliest, download the apk from apkmirror or some other site and install it.
I have received the Contacts v3.0 update today. May be you will also get that in two or three days.