Let's make some bets

My guess is that the 880 CPU will indeed be a armv6 CPU. And I would say that this one is a good candidate:
http://www.arm.com/products/CPUs/ARM1176.html

Notable features:
- ARM Intelligent Energy Manager (IEM) technology which can reduce processor energy consumption from 25% to 50% - making them ideal for cell-phone, PDA, hand-held game and other portable
- Optional Vector Floating Point coprocessor (ARM1176JZF-S) (Powerful acceleration for embedded 3D-graphics)

My conclusion are based on the fact that:
1/ there are some if [ "`uname -m`" == "armv6l" ] all over Maemo source code
2/ Some folks may already be playing with armv6l CPUs on tablets: http://synthesize.us/Maemo/HTTP_User-Agents

But of course I may be wrong