Are the HTC Shift and Sony Ericsson Xperia X1 Too Little Too Late?

I read somewhere that the HTC Shift is near shipping and that the Sony Ericsson Xperia X1 was announced. (the first Windows Mobile device from a firm that normally uses their home-brewed Symbian OS). Both devices are amazing pieces of ultra mobile technology. The question is: Are they still relevant? We already know that the Shift will be priced around US$1500. And, Sony Ericsson always charges a premium for their products. My guess is that the Xpreia X1 will be priced between $500 and $1000. With ultra mobile devices like the Asus Eee PC, OLPC XO, Everex CloudBook, and Flipstart already in the retail pipeline for well under $1000, are these new entries too little too late?

To make things more interesting, Engadget reports that Microsoft just bought Danger (the Sidekick people). They speculate that this means there will be a Windows Mobile Sidekick in the future. But, take a look at the Sony Ericsson Xperia X1 again. Does that look like WiMo despite it actually does form the base OS? Not really, huh? Have both Microsoft and WiMo hardware vendors lost faith in WiMo? Will the Sidekick platform be the basis of a lighter weight OS and let Microsoft dump the current Windows CE based WiMo in a few years?
I guess we will know more by the end of the calendar year.