Yes in current release and 4.2b4.
When creating a new identity item, there is no field for address line 2 and there does not seem to be a way to add it.
Just try to add a new identity item in iOS and observe the address section.
This is inconsistent with schema used in the 3.x version. There may be other schema discrepancies but I have not done an exhaustive comparison.
I don't know if this is dependent on my iOS Language or Region settings which are British English and United Kingdom respectively on my devices.