Pioneer AVH-2500NEX vs AVH-2400NEX - Differences???

What are the differences between the Pioneer AVH-2500NEX and it's older model AVH-2400NEX???
Pioneer AVH-2500NEX
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Axxess ASWC-1 Steering Wheel Control Interface
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SXV300V1 Sirius XM Connect Universal Satellite Radio Tuner
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Mirroring Adapter iPhone
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