Those internal changes that Verizon’s been making to help usher in their LTE-based 4G network doesn’t just end with the backend. Engadget’s received word that SIM cards for LTE-enabled devices have started to flow into the ecosystem well ahead of any device launches (with the first expected to be sometime before the end of the year alongside Verizon’s initial rollout).

We still don’t know which manufacturer will be offering an Android-based LTE-compatible device for the carrier, but it’s long been rumored that we’ll see one in the earlier parts of 2011. Excitement grows, data buffs are watering at the mouth, and all is well with the world.

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