It appears the naming convention for the Check Point IP appliance has changed. Why?
The Check Point IP appliances are named based on the R70 based software blade architecture. For example, on the Check Point IP 1285 the last digit reflects the number of software blades included with the appliance. The blades preloaded on the IP1285 include firewall, VPN, IPS, advanced networking, and acceleration and clustering software blades. This is exactly the same naming convention as for the UTM-1 and Power-1 appliances.