I also have the plain brushed metal KSplash theme after the 108 package update from KDE-4.8.3 to 4.9.2.
And in System Settings > Workspace Appearance the Default ksplash theme is no longer present.
Synaptic indicates that kde-workspace-4.9.2-1_archie_2012 is installed but the size is 0B
while the next column Download (NL=Ophalen) reports 10.9kB.
I guess the kde-workspace update didn't went 100%.
And after a re-install it is still 0B
Is there any explanation for this 0B size
On my netbook, which is still on 4.8.3, kde-workspace-4.8.3 also shows 0B.
My tip: Install ksplash-theme-legacy
in Synaptic in order to get a beautiful theme.