Some time ago I setup a script that greps for interesting strings in my www log, today I found this entry (I highlighted the interesting parts):
Mozilla/4.0 (compatible; MSIE 6.0; X11; Linux armv6l; U) Opera 8.5 [en_GB] Maemo browser 0.7.4 RX-34_2007SE_2.2006.48-10
A new CPU, newer Opera version, and a firmware name that is dated for next year :-)
In comparison, the current 770 firmware looks like this:
Mozilla/4.0 (compatible; MSIE 6.0; ; Linux armv5tejl; U) Opera 8.02 [en_GB] Maemo browser 0.4.31 N770 /SU-18
And since the new device log was produced by a German IP I guess some people are allready running around with new a device. I wonder if this was the 870.