Of course they are. That's the whole plan with going to bed with Google and Android.
Next Android phones with Android 3.0 will have PSN access and next big Sony/Ericsson phone will be the PSP-Go style phone we already were hinted.
EDIT: and those of you arguing against this move really have no long term strategy in mind. Its a brilliant move and will hurt MS and Apple, as well as Nintendo to a smaller extent.







