The icon appears after the latest update, but it appears to be a bit too large for the KDE plasma system tray to handle correctly.

Complete system info:

Processor Information:
    Vendor:  GenuineIntel
    Speed: 2301 Mhz
    4 logical processors
    2 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Unsupported
    SSE41:  Supported
    SSE42:  Supported

Network Information:
    Network Speed:  

Operating System Version:
    "Arch Linux" (64 bit)
    Kernel Name:  Linux
    Kernel Version:  3.7.5-1-ARCH
    X Server vendor:  The X.Org Foundation
    X Server release:  11302000

Video Card:
    Driver:  Intel Open Source Technology Center Mesa DRI Intel(R) Sandybridge Mobile x86/MMX/SSE2

    Driver Version:  3.0 Mesa 9.0.2
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 60 Hz
    VendorID:  0x1002
    DeviceID:  0x6741
    Number of Monitors:  2
    Number of Logical Video Cards:  2
    Primary Display Resolution:  1366 x 768
    Desktop Resolution: 2726 x 768
    Primary Display Size: 13.54" x 7.60"  (15.51" diag)
                                            34.4cm x 19.3cm  (39.4cm diag)
    Primary VRAM Not Detected

Sound card:
    Audio device: Intel CougarPoint HDMI

Memory:
    RAM:  3868 Mb

Miscellaneous:
    UI Language:  English
    LANG:  en_GB.UTF-8
    Microphone:  Not set
    Total Hard Disk Space Available:  134288 Mb
    Largest Free Hard Disk Block:  56468 Mb

Installed software:

Recent Failure Reports:
    Wed Feb  6 02:26:52 2013 GMT: file ''/tmp/dumps/assert_20130206022641_1.dmp'', upload yes: ''CrashID=bp-685e130e-e734-42bc-b36e-acf982130205''

kdebase-plasma 4.9.5-1