It is an interesting aspect, though, because at the moment there's two theories:

While everybody assumes there will be more Maemo devices in the future, some seem to be deeply convinced that the N900 will remain the only Maemo 5 model and any following handset will already run Maemo 6.

Others believe that there will be at least one more Maemo 5 model and Maemo 6 is too far away to think of it hardware-wise.

Having what you describe in the code for Maemo 5 makes a 2nd M5-model more realistic, doesn't it?