Look what I found on this German Site which sports the Title T-Mobile and Microsoft announcing new Windows Mobile-Smartphones!?
Looks like a Sendo 
Sendo X Look a like
Looks like a Sony Ericsson:
😉
And the Sendo X looks like the T610..
The first phone is an HTC handset (I forget which model), running Windows Mobile. It's the same handset as Orange are selling in the UK as the SPV C550.
The second phone is a SonyEricsson T630, an update to the T610.
Neither of these are in any way connected to Sendo (other than the fact that Sendo did most of the dev work for Windows Mobile 😉)